No Brainer:
Brain Has Grid-Like Structure

A new way of mapping the brain's structure reveals that it has a grid-like structure.

Rather than the tree-and-branch structure previously suspected, it seems that the brain is made up of ribbons of neuronal fibres that cross paths at right angles.

From TechWeekEurope:

"Getting a high resolution wiring diagram of our brains is a landmark in human neuroanatomy," said NIMH Director Thomas R. Insel, M.D. "This new technology may reveal individual differences in brain connections that could aid diagnosis and treatment of brain disorders."

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Galaxy Positioning System:
Using Pulsars for Space Navigation

Pulsars could be used by spacecraft as a kind of GPS system for navigation.

These dead stars rotate and emit radiation with such regularity that they rival the accuracy of atomic clocks.

From BBC News:

If a spacecraft carried the means to detect the pulses, it could compare their arrival times with those predicted at a reference location. This would enable the craft to determine its position to an accuracy of just five kilometres anywhere in the galaxy.

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Eye on Radiation:
Camera Can 'See' Gamma Rays

Researchers in Japan have developed a camera that can 'see' radiation.

The camera may be used in the long and complex task of decontaminating the site of the Fukushima disaster.

From The Mainichi Daily News:

The new development makes it possible to easily grasp where radioactive substances spewed from the stricken Fukushima No. 1 nuclear plant have accumulated, and is likely to help decontamination work in the affected areas, officials say.

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Unstable:
Fukushima Reactor Lacks Water & Has High Radiation Levels

Recent probes have revealed that one of the reactors at Fukushima has high levels of radiation and little water to cool it.

The environment in the reactor is such that it could take decades of specialist work to decontaminate it.

From The Washington Post:

The data collected from the probes showed the damage from the disaster was so severe, the plant operator will have to develop special equipment and technology to tolerate the harsh environment and decommission the plant, a process expected to last decades.

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Junk Funk:
ISS Astronauts Rattled by Space Junk

Astronauts aboard the International Space Station were evacuated to the station's escape pods when a piece of debris passed nearby.

The debris originated from a Russian Cosmos satellite, but luckily avoided the station in the end.

From CNN:

"The Expedition 30 crew aboard the International Space Station received an 'all clear' to move out of their Soyuz vehicles after a small piece of a Russian Cosmos satellite debris passed by the complex without incident early Saturday," the statement said.

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Pacific Grim:
Fukushima Radiation Polluting Pacific Ocean

A recent analysis seems to show that radiation from the Fukushima disaster has polluted a wide area of the Pacific ocean.

The irradiated water is fast approaching the Hawaiian islands.

From Straight.com:

Last April, Japanese officials claimed that they had halted the release of radioactive radiation from the crippled nuclear reactors at Fukushima.
On December 5, however, the Los Angeles Times revealed that "45 tons of highly radioactive water" had been released from the plant on the previous weekend.

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High Frontier:
Skydiver Prepares For Highest Jump Ever

Felix Baumgartner has taken a balloon up 22 kilometres and jumped successfully from it, in preparation for his coming attempt at the world record.

He will jump from 36 kilometres and possibly become the first human to fall at the speed of sound.

From BBC News:

His Red Bull Stratos team estimates he reached 364mph (586km/h) during the descent, and was in free fall for three minutes and 43 seconds before opening his parachute. From capsule to ground, the entire jump lasted eight minutes and eight seconds.

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Mammoth:
Scientists Plan to Clone Wooly Mammoth

Scientists are hoping that they can recreate the wooly mammoth using cloning technology.

The discovery of frozen tissue in the Arctic tundra could result in viable genetic material that would be used to impregnate an elephant with a mammoth embryo.

From PhysOrg:

"The first and hardest mission is to restore mammoth cells," another Sooam researcher, Hwang In-Sung, told AFP. His colleagues would join Russian scientists in trying to find well-preserved tissue with an undamaged gene

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Can't Stop The Signal:
Message Sent Using Neutrinos

Researchers have sent a message through 240 metres of stone using neutrinos.

If the technology is commercialised, it could put an end to having no signal on your mobile phone.

From the University of Rochester:

"Of course, our current technology takes massive amounts of high-tech equipment to communicate a message using neutrinos, so this isn't practical now," said Kevin McFarland, a University of Rochester physics professor who was involved in the experiment. "But the first step toward someday using neutrinos for communication in a practical application is a demonstration using today's technology."

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The Final Frontier:
First Nuclear Aircraft Carrier Nears End of Life

The USS Enterprise, the world's first nuclear-powered aircraft carrier, is setting off on its final voyage after 50 years of service.

The Enterprise was only meant to be in service for 25 years, but has ended up serving for twice as long.

From NPR:

The Enterprise is the longest aircraft carrier in the U.S. fleet. It is also the oldest, a distinction that brings pride as well as plenty of headaches for the ship's more than 4,000 crew members. The ship is effectively a small city that frequently needs repairs because of its age. It was originally designed to last 25 years, but a major overhaul in 1979 and other improvements have extended its life.

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The Acid Test:
Is LSD a Viable Treatment for Alcoholism?

A thorough analysis of scientific papers from the 1960s has revealed LSD's potential as a treatment for alcoholism.

After receiving a single dose of LSD, patients reported a 'significant beneficial effect'.

From BBC News:

This effect was maintained six months after taking the hallucinogen, but it disappeared after a year. Those taking LSD also reported higher levels of abstinence.

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Levitation:
Magnetic Levitation May Have Medical Uses

Magnetic levitation has been used to create high speed trains, but the technology may now have medical applications as well.

Researchers have found a way to use magnetic levitation to detect changes in proteins that could be used for diagnostic purposes.

From C&EN:

According to Whitesides, the main advantages of the levitation system are its low cost and portability. The magnets cost only about $5 each, and the device requires no electricity or batteries. Because the beads are visible to the naked eye, researchers can make measurements with a simple ruler with a millimeter scale.

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Wire in the Blood:
Implant Breakthrough Could Lead to Robotic Limbs

A breakthrough by scientists at Sandia Laboratories could lead to robotic limbs that interface directly with the nervous system.

They have developed a biocompatible implant that could be used to route nerves to a prosthetic limb.

From Gizmag:

The current work at Sandia Laboratories is still in the proof of concept stage, but the stakes are very high. If they pan out and the gap between man and machine can be bridged, we could see the first true cyborg produced. Or, at the very least, the liberation of hundreds of thousands of people from physical limitations.

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Flares Are Back:
Impending Solar Flare Threatens Earth

A physicist is predicting that the sun could soon release a huge solar flare that poses a catastrophic threat to electrical systems on Earth.

Critical infrastructure such as GPS satellites and electrical grids could potentially go offline for months or even years afterwards, leading to knock-on effects.

From Wired:

“A longer-term outage would likely include, for example, disruption of the transportation, communication, banking, and finance systems, and government services; the breakdown of the distribution of potable water owing to pump failure; and the loss of perishable foods and medications because of lack of refrigeration,” the NRC report said.

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That's Rich:
Upper Classes Are More Dishonest

Take two people: one is rich, the other poor. Who's the most honest?

A new study seems to show that the rich are more likely to be dishonest.

From Science:

The team's findings suggest that privilege promotes dishonesty. For example, upper-class subjects were more likely to cheat. After five apparently random rolls of a computerized die for a chance to win an online gift certificate, three times as many upper-class players reported totals higher than 12—even though, unbeknownst to them, the game was rigged so that 12 was the highest possible score.

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Jamming:
GPS Jammers Becoming More Widespread

A UK government study has uncovered over 100 incidents where GPS jamming devices have been used.

The jammers could be used for a variety of illegal purposes from fraud to armed robbery.

From ZDNet:

"Our modern society is almost completely reliant on GPS," Humphreys told the conference. "It could be deadly."

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Nuclear Boom:
US Builds Two New Nuclear Power Plants

The Fukushima disaster may have led to many countries banning new construction of nuclear reactors, but US regulators are not following in their footsteps.

Approval has been given for the construction of two new power plants in Georgia -- the first nuclear reactors built in the US for 30 years.

From USA Today:

Allison Fisher, an energy expert for the consumer advocacy group Public Citizen, called the NRC's action — less than a year after the Japan crisis — a step in the wrong direction.
"It is inexplicable that we've chosen this moment in history to expand the use of a failed and dangerous technology," she said.

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Out Of Africa By Sea?

Seems that early humans may have been going to sea much longer than anyone had ever assumed.

Discoveries of prehistoric stone tools on Greek islands and genetic evidence from Australia form a valid cause for reconsidering the migration routes for prehuman travellers.

From The Wall Street Journal:

For a long time, scientists had assumed a gradual expansion of African people through Sinai into both Europe and Asia. Then, bizarrely, it became clear from both genetics and archaeology that Europe was peopled later (after 40,000 years ago) than Australia (before 50,000 years ago).

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A Weighty Matter:
Is Earth Getting Lighter or Heavier?

earth-thumb.jpgAs time goes on, does the Earth lose mass or gain it?

A physicist has calculated that the planet sucks in tonnes of space dust every year due to gravity, but it's still losing mass.

From BBC News:

For instance, the Earth's core is like a giant nuclear reactor that is gradually losing energy over time, and that loss in energy translates into a loss of mass.

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Breaking Down Brain Waves To Hear

US scientists have demonstrated that the brain decodes sounds into patterns of electrical currents and based on the correlation between sound and electric activity in brain's temporal lobe they were able to predict the words the person heard.

However any practical use in case of patients who cannot talk is a long way of because this research is based on what a person actually hears, rather than thinks of...

From The Guardian:

Experiments on 15 patients in the US showed that a computer could decipher their brain activity and play back words they heard, though at times the words were difficult to recognise.
"This is exciting in terms of the basic science of how the brain decodes what we hear," said Robert Knight, a senior member of the team and director of the Helen Wills Neuroscience Institute at the University of California, Berkeley.

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Hot Topic:
Is Global Warming Just Hot Air?

Global warming is one of the most controversial issues of our time.

Now 16 scientists have publishing an op-ed in the Wall Street Journal that casts doubt on the orthodox view of climate change.

From The Wall Street Journal:

In September, Nobel Prize-winning physicist Ivar Giaever, a supporter of President Obama in the last election, publicly resigned from the American Physical Society (APS) with a letter that begins: "I did not renew [my membership] because I cannot live with the [APS policy] statement: 'The evidence is incontrovertible: Global warming is occurring. If no mitigating actions are taken, significant disruptions in the Earth's physical and ecological systems, social systems, security and human health are likely to occur. We must reduce emissions of greenhouse gases beginning now.' In the APS it is OK to discuss whether the mass of the proton changes over time and how a multi-universe behaves, but the evidence of global warming is incontrovertible?"

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Happy Anniversary:
Mars Rover's Eight Year Mission

The Mars rover Opportunity has just marked eight years on the red planet.

While its companion rover Spirit bit the dust long ago, Opportunity has managed to keep on trucking as it searches for signs of life.

From Time:

It was on January 25, 2004 that the rover Opportunity — swaddled in its cocoon of shock-absorbing air bags — bounced down on Mars for a mission designed to last a minimum of three months and a maximum of just a year or two. Eight years later, Opportunity is slower, creakier and much, much dirtier, and yet it's still at work, hunkering down on the crater rim as it prepares to ride out another bitter Martian winter. When the relative warmth and sunlight of spring return, the golf-cart-sized rover will resume its wanderings, adding to the mass of data it's already collected about Mars's wet, balmy, and perhaps biologically active past.

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Mother Russia on the Move:
Russia Eyes Moon Base With Nasa

In spite of the failure of the recent Phobos-Grunt mission, Russia's space programme is still forging ahead with ambitious ideas.

One possible way forward might be a joint base on the Moon in cooperation with Nasa.

From The Register:

"We don’t want the man to just step on the Moon,” agency chief Vladimir Popovkin said in an interview with Vesti FM radio station. “Today, we know enough about it. We know that there is water in its polar areas," he added. "We are now discussing how to begin [the Moon’s] exploration with NASA and the European Space Agency."

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No Guts, No Glory:
Genetically Engineered Gut Bacteria Turn Seaweed Into Biofuel

Biofuels have been controversial as they have caused the prices of crops such as corn to rise.

But researchers may have found a way to turn abundant seaweed into ethanol using genetically engineered E.coli bacteria -- which could eventually be used to manufacture other substances such as plastics.

From Scientific American:

The microbe could turn out to be useful for making molecules other than ethanol, such as isobutanol or even the precursors of plastics, Yoshikuni says. "Consider the microbe as the chassis with engineered functional modules," or pathways to produce a specific molecule, Yoshikuni says. "If we integrate other pathways instead of the ethanol pathway, this microbe can be a platform for converting sugar into a variety of molecules."

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Hotshots:
Coronal Mass Ejection From Sun Heads For Earth

A coronal mass ejection (CME) from the Sun is heading for Earth but don't panic just yet.

Whilst the CME was originally predicted to head straight for us, it now looks like we're in for a near miss.

From The Washington Post:

“At first glance, it was, ‘Oh my God, it’s at the center of the [sun’s] disk, it ought to go right to the Earth,’ ” Kunches said. But upon further review and “head-scratching” Thursday, NOAA’s space weather team calculated that most of the plasma blob should pass harmlessly over the top of our planet.

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The DNA Code:
Using Genetics to Defeat Counterfeiters

Methods to defeat counterfeiters such as holograms often don't take long to be circumvented.

So the US Department of Defense are turning to DNA as a way of embedded invisible 'barcodes' that are impractical to replicate.

From Wired:

“DNA is beyond what the bad guys can copy,” Hayward says. “You can counterfeit your way through visual inspection, through X-Rays. DNA is easily the strongest platform for authentication in the world.”

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Here's Ears:
Scientists Create Tiniest Microphone Ever

Scientists have developed the smallest microphone ever created, using gold nanoparticles and lasers.

The tiny microphone could record the sound of activity inside the smallest cells.

From ScienceNOW:

Feldmann's team recorded and analyzed the movements of this particle in response to acoustic vibrations caused by the laser-induced heating of other gold nanoparticles in the water nearby. As well as having unprecedented sensitivity, their nano-ear could also calculate the direction the sound had come from. They suggest three-dimensional arrays of nano-ears working together could be used to listen in on cells or microorganisms such as bacteria and viruses, all of which emit very faint acoustic vibrations as they move and respire. "There are definitely medical opportunities which we can tackle together with the right people," Feldmann says, "but we just have to see how it works first."

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Phobos:
Russian Official Fears Space Mission Sabotage

The recent failure of the Phobos-Grunt mission to Mars damaged the pride of Russian space scientists.

Now a senior Russian official has inferred that Russia's space launch failures could be the result of interference of from other countries.

From The New York Times:

“We don’t want to accuse anybody, but there are very powerful devices that can influence spacecraft now,” Mr. Popovkin said in the interview. “The possibility they were used cannot be ruled out.”

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A Brief History of Hawking:
Surviving Motor Neurone Disease

Stephen Hawking was diagnosed with Motor Neurone Disease in 1963 and told he had months to live.

In a remarkable testament to his tenacity and will to surive, the scientist has just marked his 70th birthday.

From BBC News:

The man himself says: "I have been lucky, that my condition has progressed more slowly than is often the case. But it shows that one need not lose hope.

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iPhone 1983:
Archives Reveal Apple's Early Telephony Experiments

A peek into Stanford University's archives has revealed that Apple experimented with prototype phones as early as 1983.

The company gave its archives to Stanford in 1997 but most of the material has remained private until now.

From Mashable:

The phone was designed for Apple by Hartmut Esslinger, an influential designer who helped make the Apple IIc computer (Apple’s first “portable” computer) and later founded Frogdesign. The 1983 iPhone certainly fits in with Esslinger’s other designs for Apple. It also foreshadows the touchscreens of both the iPhone and iPad.

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Supershrink Me:
Junk Food Causes Brain Shrinkage

A diet rich in trans fats from junk food could result in brain shrinkage and eventual dementia, according to new research.

By avoiding these harmful fats and consuming more beneficial omega fatty acids, this shrinkage could be prevented.

From BBC News:

Study author Gene Bowman of Oregon Health and Science University said: "These results need to be confirmed, but obviously it is very exciting to think that people could potentially stop their brains from shrinking and keep them sharp by adjusting their diet."

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The Big Dipper:
China's GPS Rival Goes Online

chinaflag.jpgChina's alternative to GPS, Beidou (meaning Big Dipper), has been activated for trial usage.

As well as civilian uses, Beidou has potential military applications.

From BBC News:

A 2004 study by Geoffrey Forden, a researcher at the Massachusetts Institute of Technology, suggested that Beidou could be used to target cruise missiles against Taiwan if a war broke out over the territory. Having its own system would protect China against the risk that the US could turn GPS off.

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Bum Deal:
Japan Pioneers Biometrics of the Bottom

Biometrics for security such as iris recognition is becoming more commonplace.

The newest variation has been created by Japanese researchers -- a car seat that identifies you by the impression left by your bottom.

From PhysOrg:

They say that traditional biometric techniques such as iris scanners and fingerprint readers cause stress to people undergoing identity checks, while the simple act of getting seated carries less psychological baggage. Their other point is that other technologies such as fingerprint scanning can be compromised when sensor surfaces are unclean, or when there is poor lighting as in iris scanning, contaminating results.

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Adults Only:
Vending Machine That Detects Your Age

When food manufacturer Kraft wanted to distribute samples of a new pudding, they didn't want to attract negative publicity by giving them to children.

To that end, they have introduced a new type of vending machine that uses facial recognition to detect if you are an adult or not.

From Gizmag:

Kraft's goal of course is to ensure its samples are reaching their target demographic, but also hopes the odd machines will draw in consumers as well. According to Charlotte Maumus, PR rep for Kraft:
"Temptations is the first Jell-O dessert made just for adults, so it makes sense that this breakthrough technology dispenses free samples to adults only. Showcasing the future of how consumers could interact with products and sample more easily, if the machine detects a child, it will shut down, asking the child to step away from the machine. But if it detects an adult, then a tasty sample is dispensed."

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Boson and On:
LHC Discovers New Particle, But It's Not The Higgs Boson

Scientists analysing data from the Large Hadron Collider believe that they have discovered a new kind of particle, but it's not a Higgs boson.

The Chi-b(3P) is a boson like the Higgs that combines a beauty quark and its antiquark so that they bind together.

From The University of Birmingham:

Professor Roger Jones, Head of the Lancaster ATLAS group said: ‘While people are rightly interested in the Higgs boson, which we believe gives particles their mass and may have started to reveal itself, a lot of the mass of everyday objects comes from the strong interaction we are investigating using the Chi-b.’

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Security Through Obscurity:
US Government Advisors Want Flu Research Censored

A panel of scientific advisors to the US government are asking researchers to censor their work into the flu virus.

They believe that there are implications for national security if the research is published in peer review journals.

From The New York Times:

“I wouldn’t call this censorship,” Dr. Alberts said. “This is trying to avoid inappropriate censorship. It’s the scientific community trying to step out front and be responsible.”

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Is Shrilk a nature inspired challenge to reign of plastic?

Recently developed at Harvard University this cheap and biodegradable material promises wide applications either in consumer market or medical professions.

Called "Shrilk" as it is made of of protein in silk and chitin (commonly extracted from shrimp shells) it has properties similar to an aluminium alloy but only half the weight and it degrades quickly. One of the many practical uses could be a replacement for ubiquitous plastic bags.

From Wyss Institute

"Researchers at the Wyss Institute for Biologically Inspired Engineering at Harvard University have developed a new material that replicates the exceptional strength, toughness, and versatility of one of nature's more extraordinary substances -- insect cuticle.

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The Ways Of The Cow


Do cows dig synchronised grazing?

It was one of the challenges of new research on cattle behaviour using hypothetical mathematical model.


From Guardian

"A British-American team of scientists has produced a study called A Mathematical Model for the Dynamics and Synchronisation of Cows."

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Earth 2.0:
Planet Capable of Supporting Life Discovered

Astronomers have discovered a planet similar to Earth 600 light years away.

Kepler-22b potentially has liquid water and consequently could support life.

From BBC News:

Kepler 22-b lies 15% closer to its sun than the Earth is to our Sun, and its year takes about 290 days. However, the planet's host star puts out about 25% less light, keeping the planet at its balmy temperature that would support the existence of liquid water.

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Red Herring:
DNA Barcodes to Prevent Counterfeit Fish Sales

Many restaurants pass off cheap fish as more expensive varieties.

The problem has grown so large that restauranteurs are planning to use DNA fingerprinting to ensure diners get what they pay for.

From AP

Mislabeling is widespread in the seafood industry and usually involves cheaper types of fish being sold as more expensive varieties. A pair of New York high school students using DNA barcoding of food stocked in their own kitchens found in a 2009 study that caviar labeled as sturgeon was actually Mississippi paddlefish.

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Emo:
The Phone System That Recognises Your Emotions

sms.jpgThere are few things more infuriating than an automated phone answering system.

Now a new technology can be used to detect your emotional state and tailor a response accordingly.

From Gizmag:

After having identified a person's mood and intentions, the system could then adapt the dialogue accordingly. If a user sounded doubtful of the system, for instance, it could offer them more help. If they sounded bored or angry, however, that offer might just irk them further.

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See The Light:
Lightest Material Ever Created

Researchers have developed the world's lightest material, a lattice made from metal tubes 1,000 times thinner than a human hair.

The material could have many applications including thermal insulation and shock absorption.

From BBC News:

William Carter, manager of architected materials at HRL, compared the new material to larger low-density structures.
"Modern buildings, exemplified by the Eiffel Tower or the Golden Gate Bridge are incredibly light and weight-efficient by virtue of their architecture," he said.
"We are revolutionising lightweight materials by bringing this concept to the nano and micro scales."

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Broad Spectrum:
Steve Jobs Hoped to Use Wi-Fi to Supplant Mobile Carriers

Venture capitalist John Stanton has revealed that Steve Jobs wanted to create his own wireless network to cut out mobile carriers completely.

Jobs planned to use unlicensed Wi-Fi spectrum and eliminate the involvement of carriers such as AT&T.

From ITworld:

Stanton, currently chairman at venture capital firm Trilogy Partners, said he spent a fair amount of time with Jobs between 2005 and 2007. "He wanted to replace carriers," Stanton said of Jobs, the Apple founder and CEO who passed away recently after a battle with cancer. "He and I spent a lot of time talking about whether synthetically you could create a carrier using Wi-Fi spectrum. That was part of his vision."

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Protect & Serve?
NYPD Begins Eviction of Occupy Wall Street

The New York Police Department (NYPD) has started to evict protesters from Zucotti Park, the site of the Occupy Wall Street demonstration.

NYPD officers began their operation against the two month old protest at 1am local time.

From the New York Daily News:

"They took oaths to protect and serve," Jason Lee, 36 of Brooklyn, told a reporter who managed to remain in the protest. "They broke that oath tonight. They destroyed what we built. That's tyranny by any definition."

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Petri Dish:
Lab-Grown Meat is Coming

Scientists in the Netherlands are making great progress in their quest to grow meat from animal cells in a lab.

They are coming to the point where they will be able to produce the first lab-grown hamburger, at a cost of a quarter of a million euros.

From Reuters:

"The first one will be a proof of concept, just to show it's possible," Post told Reuters in a telephone interview from his Maastricht lab. "I believe I can do this in the coming year."

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Knot Bad:
Scientists Fashion Complex Molecular Knots

Scientists have created the most complex non-DNA molecular knot, a 160 atom loop with five crossing points known as a pentafoil knot.

These complex molecules could eventually lead to materials with desirable qualities such as elasticity and shock absorption.

From Science Debate:

David Leigh, Edinburgh University professor of organic chemistry, said: "It's very early to say for sure, but the type of mechanical cross-linking we have just carried out could lead to very light but strong materials, something akin to a molecular chain mail."

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Help Wanted:
US Military Need Help Securing Networks

Darpa, the US military research agency responsible for the creation of the Internet, has admitted that it needs more help to secure networks.

Public networks like the Internet are far too porous and vulnerable to attack, so Darpa is soliciting ideas for solutions to the problem.

From Wired:

Because it’s the blue-sky research agency that helped create the internet, Darpa framed the problem as a deep, existential one, not a pedestrian question of insecure code. “It is the makings of novels and poetry from Dickens to Gibran that the best and the worst occupy the same time, that wisdom and foolishness appear in the same age, light and darkness in the same season,” mused Regina Dugan, Darpa’s director. She’s talking about the internet. “These are the timeless words of our existence. We know it is true of everything.”

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Lifelike:
Biology Inspires Technology

One of the biggest trends in contemporary science is biomimicry, where new developments are based on techniques already seen in nature.

Now researchers have developed a reusable adhesive tape with remarkable properties based on the wall climbing abilities of gecko lizards.

From Gizmag:

The secret to the wall climbing ability of many insects and geckos lies in the thousands of tiny hairs called setae that cover their feet and legs. The sheer abundance of these hairs, coupled with flattened tips that can splay out to maximize contact on even rough surface areas, make it sufficient for the Van der Waals forces, which operate at a molecular level and are relatively weak compared to normal chemical bonds, to provide the requisite adhesive strength that allows them to scurry along walls and ceilings.

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Nuked:
Belgium Readies End of Nuclear Power

Although Belgium still lacks a government, the main political parties have agreed to end the use of nuclear power by 2025 — subject to the adoption of alternative energy as a replacement.

The plans were originally drawn up and made law in 2003, but the Fukushima disaster has increased public hostility to nuclear power stations.

From Reuters:

"If it turns out we won't face shortages and prices would not skyrocket, we intend to stick to the nuclear exit law of 2003," a spokeswoman for Belgium's energy and climate ministry said.

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A Fishy Tale:
Fish Evolve to Survive Toxic Conditions

Researchers have discovered certain fish living in New York's Hudson river have mutated to survive in toxic conditions.

Polychlorinated biphenyls (PCBs) are amongst the most toxic substances known to humanity, yet the fish in question have adapted.

From The Economist:

The species of interest to Dr Wirgin is the Atlantic tomcod of the Hudson river in upstate New York. Part of the Hudson was polluted with PCBs by two General Electric plants. Dr Hahn is looking at a different animal, the killifish (pictured), in New Bedford harbour, Massachusetts, which was polluted by other producers. Both Hudson tomcod and New Bedford killifish are able to tolerate levels of PCB far higher than those that would kill such fish in cleaner waters. The question is, why?

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High Orbital Heist:
Chinese Hackers May Have Compromised US Satellites

radarsat.jpgA US Congress report indicates that Chinese hackers may have assumed control of two American satellites.

The two satellites suspected to have been compromised were engaged in climate analysis rather than military applications.

From Businessweek:

The commission’s 2009 report said that “individuals participating in ongoing penetrations of U.S. networks have Chinese language skills and have well established ties with the Chinese underground hacker community,” although it acknowledges that “these relationships do not prove any government affiliation.”

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Lucky Seven?
Earth's Population Hits Seven Billion Mark

earth-thumb.jpgEarth's population has officially hit the seven billion mark.

With the number of the world's citizens growing at 10,000 per day, the controversial topic of population control refuses to go away.

From The Guardian:

Thus our population rises at the same time as the number of people Earth can sustain shrinks, while spreading industrialisation and western consumption patterns only accelerate this process.The poor should get richer; but high birth rates, compounded by resource depletion and environmental degradation actively hinder development.

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Gut Logic:
Computing With Bacteria

ecoli.jpgScientists have made a breakthrough in the field of biological computing.

Genetically-engineered bacteria were used to create working logic gates, the building blocks of all modern computers.

From PhysOrg:

The next stage of the research will see the team trying to develop more complex circuitry that comprises multiple logic gates. One of challenges faced by the team is finding a way to link multiple biological logic gates together, similar to the way in which electronic logic gates are linked together, to enable complex processing to be carried out.

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Hub of the Matter:
UK Ploughs £50 Million Into Graphene Research Hub

The Uk government is putting £50 million into a research hub that will commercialise uses of Graphene.

Graphene has many potential applications including faster computer processors and better touchscreens.

From IT Pro:

"As the UK’s leading centre for graphene research, we look forward to the creation of the Graphene Hub which will help to stimulate the economy, create jobs and new business opportunities," said Professor Dame Nancy Rothwell, president and vice-chancellor of the University of Manchester.

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Defrosted:
Cold War Era Missile Launches Satellite

A Peacekeeper missile from the Cold War era has been repurposed as a launch vehicle for a military satellite.

The TacSat-4 satellite will be used to provide US armed forces with better communications links in the battlefield.

From Fox News:

In Afghanistan and other spots, mountainous terrain makes communications with hillside base stations challenging. In recent years, one special ops solider was killed trying to radio for support, his handheld unable to communicate with an nearby antenna.

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Armchair Astronomers:
Web Users Discover New Planets

Web users are helping astronomers discover new planets from the comfort of their home computers.

Nasa data from over 150,000 stars has been made available for citizen astronomers by Yale University, the University of Oxford, and the Adler Planetarium in Chicago.

From Science Daily:

"These three candidates might have gone undetected without Planet Hunters and its citizen scientists," said Meg Schwamb, a Yale researcher and Planet Hunters co-founder. "Obviously Planet Hunters doesn't replace the analysis being done by the Kepler team. But it has proven itself to be a valuable tool in the search for other worlds."

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You Are What You Eat:
Genes From Food Found in Bloodstream

Scientists have discovered that genetic material from the food we consume can enter our bloodstream and affect the expression of genes.

Micro RNA molecules found in food can bind with messenger RNA in our cells and alter our metabolism.

From Discover:

It’s only logical that what we eat has an effect on the expression of our genes, in the general sense that nutrients from food are involved in cellular processes that control and are controlled by gene expression. But this is an unusually direct route, and surprising from an organism that’s so different from mammals.

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Print to Pilfer:
3D Printers Used to Create Card Skimmers

3D printers are used for a variety of applications from rapid prototyping to creating artificial blood vessels for transplant.

But criminals are also using the technology to fashion flawless card skimmers used to steal money from ATM users.

From Krebs on Security:

“Just looking at the idea of 3D printing a potential skimming device, a criminal could invest in buying a desktop 3D printer,” De Schouwer wrote in an email to KrebsOnSecurity. “Not a kit printer in the line of a Makerbot or a RepMan but a desktop printer of a high end manufacturer of 3D printers like Objet, 3D Systems or Stratasys (HP). You could get one of those between $10,000 – $20,000 and they will print a high quality skimming device that, including some post finishing, will look like the real thing.”

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The Blood is the Life:
3D Printer Creates Blood Vessels

3D printing is already shaping up to be the next revolution in product design and manufacturing.

Now German researchers have used the technique to create artificial blood vessels that could be safely transplanted into patients.

"The individual techniques are already functioning and they are presently working in the test phase; the prototype for the combined system is being built," said Dr Gunter Tovar, who heads the BioRap project at Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB in Stuttgart.

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Time is Money:
Transatlantic Cable Saves Milliseconds, Makes Millions

A new transatlantic internet cable will shave milliseconds off connection times but could save financial institutions millions.

As more trading is done automatically by computers using algorithms, a tiny improvement in speed could yield massive profits.

From The Daily Telegraph:

Of course, verifiable figures are elusive and estimates vary wildly, but it is claimed that a one millisecond advantage could be worth up to $100m (£63m) a year to the bottom line of a large hedge fund.

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Electric Jelly:
Electrolyte Gel Means Safer Batteries

blackberry.jpgLithium batteries used in laptops and handhelds have experienced safety problems in the past that led to them exploding.

But a new technique replaces the liquid electrolyte used in the batteries with a gel that makes them much safer.

From BBC News:

"Safety is of paramount importance in lithium batteries. Conventional lithium batteries use electrolytes based on organic liquids; this is what you see burning in pictures of lithium batteries that catch fire. Replacing liquid electrolytes by a polymer or gel electrolyte should improve safety and lead to an all-solid-state cell," said Professor Peter Bruce from the University of St Andrews, who was not involved in the study.

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Bright Idea:
Nuclear Fusion With Lasers

laser.jpgThe UK has joined an initiative to create power from nuclear fusion using lasers.

The approach taken by the National Ignition Facility (Nif) is yielding more promising results than previous efforts using Tokamaks.

From BBC News:

Dr Moses said that a single shot from the Nif's laser - the largest in the world - released a million billion neutrons and produced for a tiny fraction of a second more power than the world was consuming.

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Larry vs Larry:
Judge Asks Oracle & Google to Attend Mediation

Oracle is currently suing Google over the use of Java in the Android operating system for mobiles.

Now the judge in the case is recommending that the respective heads of both companies attend mediation to resolve the case.

From ITworld:

Now it's up to the magistrate judge, Paul Singh Grewal, to decide which executives should appear. In his Thursday order, Alsup referred the mediation to Grewal and recommended that he order Ellison and Page, as well as the executives the companies already suggested, to attend. But he said the final determination is up to Grewal.

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Small Wonder:
World's Smallest Electric Motor

Scientists have created an electric motor from a single molecule.

The motor is one nanometre long and could eventually be used in applications such as cooling microprocessors.

From New Scientist:

If accepted by Guinness, the motor will be a record smasher. The current world-record holder for the smallest electric motor is a giant by comparison, composed of two 200-nanometre-long carbon nanotubes. Current running through these nanotubes pushes drops of molten metal from the outside of one tube to the other.

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Orbital Junkyard:
Space Debris Reaches 'Tipping Point'

earth-thumb.jpgOrbital debris has reached a 'tipping point' that could prove disastrous, according to a new report.

The amount of space junk currently in orbit could lead to a self-sustaining chain reaction and drastically worsen the problem.

From Reuters:

Some computer models show the amount of orbital debris "has reached a tipping point, with enough currently in orbit to continually collide and create even more debris, raising the risk of spacecraft failures," the research council said in a statement released Thursday as part its 182-page report.

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WikiLeaks Leaks:
Cache of Unredacted Cables Unearthed

wikileaks.pngGerman newspaper Der Freitag claims to have unearthed a cache of unredacted diplomatic cables from WikiLeaks.

How exactly the cache came to light is unclear, but it may indicate a leak within the ranks of WikiLeaks itself.

From PC Magazine:

WikiLeaks usually redacts documents before it releases them, meaning it removes the names of informants or vulnerable sources. Many of the of the documents uncovered by Der Freitag had been published by WikiLeaks in the past, but they're not official WikiLeaks files and they have not been edited for sensitive information in the usual way. Its pages contained "named or otherwise identifiable 'informers' and 'suspected intelligence agents' from Israel, Jordan, Iran, and Afghanistan," Der Freitag said.

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Abandonment Issues:
Space Station Could Be Mothballed

The recent failure of a Russian supply rocket to the International Space Station could have disastrous consequences for the crew currently in orbit.

With the end of the Space Shuttle program and the grounding of the Soyuz-U rocket until investigations are completed, the ISS crew may have to vacate the station by the end of the year.

From Discovery:

Should no resolution be found, 11 years of continuous manned presence on the ISS will come to an end, experiments will be shelved and there will likely be lengthy delays to SpaceX's plans of carrying out an unmanned docking of their Dragon vehicle by the end of the year.

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Genes For Green:
Cannabis Genome Sequenced

cannabisplant.jpgA Dutch genomics company has released the first complete genetic sequence for Cannabis sativa.

This could lead to the development of pharmaceutical drugs based on the plant's therapeutic qualities.

From Nature:

Thus far the company is only posting the raw sequence reads – meaning that the over 131 billion bases of shotgun sequence have not yet undergone the important and arduous process of being assembled into contiguous chunks. For now, the sequence is fragmented into hundreds of thousands of snippets. But Medicinal Genomics founder Kevin McKernan says he estimates the size of the C. sativa genome to be about 400 million bases – roughly three times the genome of that other weed, the model plant Arabidopsis thaliana.

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Bright Spark:
13-Year-Old Scientist Makes Solar Power Breakthrough

A 13-year-old scientist has invented a new kind of solar array based on the mathematics behind the growth of trees.

Using the Fibonacci sequence, Aidan Dwyer designed a tree-like solar array that is more efficient than current designs.

From The American Museum of Natural History:

My conclusions suggest that the Fibonacci pattern in trees makes an evolutionary difference. This is probably why the Fibonacci pattern is found in deciduous trees living in higher latitudes. The Fibonacci pattern gives plants like the oak tree a competitive edge while collecting sunlight when the Sun moves through the sky.

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It's A Small World:
Earth Is Not Expanding

earth-thumb.jpgSince Darwin's time, scientists have wondered whether the Earth is expanding.

A recent study has concluded that Earth's radius expands by 0.1 miliimetres a year -- an amount so minuscule that it's not statistically significant.

From ScienceDaily:

The team applied a new data calculation technique to estimate the rate of change in the solid Earth's average radius over time, taking into account the effects of other geophysical processes. The previously discussed geodetic techniques (satellite laser ranging, very-long baseline interferometry and GPS) were used to obtain data on Earth surface movements from a global network of carefully selected sites. These data were then combined with measurements of Earth's gravity from NASA's Gravity Recovery and Climate Experiment (GRACE) spacecraft and models of ocean bottom pressure, which help scientists interpret gravity change data over the ocean.

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Hot Air:
Amazon CEO Proposes Airbags For Mobiles

Jeff Bezos, CEO of Amazon, has filed a patent for a system that protects mobile devices from damage.

When a device is dropped, airbags could be deployed inside the casing to prevent damage.

From GeekWire:

One idea is to embed one or more small airbags inside the phone, according to the filing. If the device is at risk of damage from a fall, the airbags would instantly inflate via an embedded cartridge of compressed air or carbon dioxide. The monitoring system could either detect which side of the phone will hit the ground, and deploy the airbag there, or pop airbags out of multiple sides of the device.

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Flaring Up:
Solar Flares Threaten Electrical Grids

As we approach a solar maximum, concerns are growing of outages in electrical grids caused by solar flares.

In the worst case scenario, solar flares could lead to major blackouts across the globe.

From National Geographic:

"The concern is if the electric grid lost a number of transformers during a single storm, replacing them would be difficult and time-consuming," said Rich Lordan, senior technical executive for power delivery and utilization at the Electric Power Research Institute (EPRI).

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Antimatter of Fact:
Antiprotons Envelop The Earth

earth-thumb.jpgScientists have discovered antimatter particles enveloping the Earth.

The antiprotons could potentially be used one day as a source of fuel for spacecraft.

From BBC News:

The team says that this is evidence that bands of antiprotons, analogous to the Van Allen belts, hold the antiprotons in place - at least until they encounter the normal matter of the atmosphere, when they "annihiliate" in a flash of light.

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Bubble Jam Delite:
Scientists Closer To Finding Parallel Universes

Scientists on the lookout for 'bubble' universes that may exist in parallel with ours have come one step closer to their goal.

They have determined that collisions between parallel universes leave a trace that could possibly be detected.

From Science Daily:

"It's a very hard statistical and computational problem to search for all possible radii of the collision imprints at any possible place in the sky," says Dr Hiranya Peiris, co-author of the research from the UCL Department of Physics and Astronomy. "But that's what pricked my curiosity."

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Cop Flop:
Antisec Hacks Police Academy

Antisec, a hacking group affiliated with Anonymous, have released over 7,000 records taken from a police training academy's website.

The intrusion is supposedly in retaliation for the recent arrest of 14 individuals relating to last December's attack on PayPal's servers.

From The Register:

Many of the passwords employed by the officers were ordinary dictionary words, or were identical to their names or badge numbers, showing that law enforcement agents often make the same careless mistakes others do in setting up security pass codes. Assuming these people used the same password for other accounts, as is common, their email accounts would also be compromised.

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Cropping Up:
Are Crop Circles Made With Microwaves?

Crop circles are generally assumed to be the work of hoaxers rather than aliens.

But some high-tech may be used in their creation as scientists suspect they are made using microwaves.

From The Institute of Physics:

Microwaves, Taylor suggests, could be used to make crop stalks fall over and cool in a horizontal position – a technique that could explain the speed and efficiency of the artists and the incredible detail that some crop circles exhibit.

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The Whole Truth:
Is Space-Time Holographic?

Could everything we see around us actually be a hologram?

Some scientists are wondering if our 3D universe is generated from a 2D interference pattern, much like the way a hologram is created.

From New Scientist:

It sounds crazy, but we have already seen a sign that it may be true. Theoretical physicists have long suspected that space-time is pixelated, or grainy. Since a 2D surface cannot store sufficient information to render a 3D object perfectly, these pixels would be bigger in a hologram. "Being in the [holographic] universe is like being in a 3D movie," says Craig Hogan of Fermilab in Batavia, Illinois. "On a large scale, it looks smooth and three-dimensional, but if you get close to the screen, you can tell that it is flat and pixelated.

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Hot Side of the Moon:
Lunar Volcanos Discovered

Scientists have discovered a volcanic complex on the far side of the moon.

Professor Bradley Joliff of Washington University in St. Louis and his colleague found an upsurge of magma composed of molten silicon and radioactive thorium among other elements.

From ScienceDaily:

"We don't have a way to get an absolute date on the Compton-Belkovich volcanic feature because we don't have rocks in hand," Jolliff says, "but since there are relatively few craters, the surface actually looks pretty fresh. And we see small-scale features that haven't been completely beaten up and obliterated by the impact process.

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Evolved:
Texas Rejects Creationist Textbooks

texasflag.jpgThe Texas Board of Education has approved textbooks based on scientific theories of evolution over those proposing creationism.

Two years ago, the board changed the curriculum to allow teaching of 'intelligent design', but the creationist textbooks submitted for approval were riddled with errors.

"This is a huge victory for Texas students and teachers," said Josh Rosenau, NCSE programs and policy director, who testified at the hearings this week. In his testimony, Rosenau urged the board to approve the supplements--recommended by a review panel largely composed of scientists and science educators--without amendments, and to reject International Database's creationist submission. The board did just that, and asked for only minimal changes to the approved supplements.

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Memory Drain:
Is Google Affecting Our Ability to Remember?

Technology is meant to improve our lives yet it could have unintended consequences.

Researchers are investigating whether our increasing reliance on tools such as search engines is compromising our ability to remember information.

From Wired:

These results suggest that processes of human memory are adapting to the advent of new computing and communication technology. Just as we learn through transactive memory who knows what in our families and offices, we are learning what the computer “knows” and when we should attend to where we have stored information in our computer-based memories. We are becoming symbiotic with our computer tools, growing into interconnected systems that remember less by knowing information than by knowing where the information can be found.

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The 18.5 Million Dollar Man:
Cyborg Research Centre Established

The US National Science Foundation has endowed $18.5 million to the University of Washington for a new centre researching mind-machine interfaces.

The new centre will investigate ways for the brain to control robotic devices and even prosthetic implants.

From Science Blog:

“The center will work on robotic devices that interact with, assist and understand the nervous system,” said director Yoky Matsuoka, a UW associate professor of computer science and engineering. “It will combine advances in robotics, neuroscience, electromechanical devices and computer science to restore or augment the body’s ability for sensation and movement.”

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By The Book:
Computer Learns Language by Playing Games

Researchers have developed an artificial intelligence (AI) that can read a game manual and go on to learn language through gameplay.

Giving the AI a manual increased its rate of victory from 46 per cent to 79 per cent.

From MIT:

“Games are used as a test bed for artificial-intelligence techniques simply because of their complexity,” says Branavan, who was first author on both ACL papers. “Every action that you take in the game doesn’t have a predetermined outcome, because the game or the opponent can randomly react to what you do. So you need a technique that can handle very complex scenarios that react in potentially random ways.”

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Small Wonder:
Pinhead Sized Camera Invented

Researchers have developed a lens-free camera that is as small as a pinhead.

The camera is based on a piece of silicon and could be manufactured at a very low cost.

From Gizmag:

"To me, the most exciting aspect of our invention is that this is the first camera that doesn't use mirrors, lenses, or moving parts," Gill told us. "This is a new class of camera that challenges the ideas of what we've always thought a camera had to be."

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Near Miss:
Space Debris Threatens Space Station

Astronauts aboard the International Space Station (ISS) prepared for an emergency evacuation when a piece of debris passed by the station.

The debris came within 335 metres of the ISS.

From BBC News:

The US space agency's (Nasa) Associate Administrator for Space Operations, Bill Gerstenmaier, said it was the closest a debris object had ever come to the station. An analysis was now under way to try to understand its origin, he added.

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Noted Weed:
Did Shakespeare Smoke Dope?

cannabisplant.jpgAn archaeologist wants to exhume Shakespeare's corpse to discover if he was a cannabis smoker.

Francis Thackeray previously found traces of cannabis in pipe fragments found in the Bard's garden.

From io9:

Thackeray says that if there is any hair or nail fragments left on the corpse, his team would be able to perform chemical analyses that could detect even highly minute quantities of marijuana. Thackeray says he plans to use laser surface scanning, which could image the skeletons of Shakespeare, his wife Anne Hathaway, and his daughter Susanna without directly disturbing them. There's also the possibility of taking DNA samples from the bard's teeth, which could also reveal what Shakespeare's diet was like.

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Give Me A Hand:
Gadget Hijacks Your Hand

Researchers have developed a way to control someone's hand movements.

The technique has already been used to help novices learn to play musical instruments.

From New Scientist:

Having successfully hijacked a hand, the researchers tried to teach it how to play the koto, a traditional Japanese stringed instrument. Koto players wear different picks on three fingers, but pluck the strings with all five fingertips, so each finger produces a distinctive sound. A koto score tells players which fingers should be moved and when, and from this Tamaki and her team were able to generate instructions telling their device how and when to stimulate the wearer's muscles.

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Snappy:
Revolutionary Camera Announced

lytro.pngA new start-up has revealed a innovative approach to photography.

Lytro's camera captures the entire 'light field' rather than a single shot, meaning you can tweak focusing post-shot and even create 3D images.

From TechCrunch:

Of course there are big risks with any business this jaw-droppingly innovative. Will they be able to get the price point low enough that people will buy the camera? Right now, the closest Ng will commit on price is somewhere between north of $1 and less than $10,000. That’s a pretty broad ballpark. We won’t be able to see the devices until the also vague “sometime this year.” An equally important question is whether the user experience be as simple as the company claims.

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Global Cooling:
Decline in Solar Activity Could Chill Earth

Solar activity may decline in the next few years according to recent research.

This may lead to a drop in temperatures here on Earth.

From Network World:

"This is highly unusual and unexpected," stated Dr. Frank Hill, associate director of the NSO's Solar Synoptic Network, in a statement. "But the fact that three completely different views of the Sun point in the same direction is a powerful indicator that the sunspot cycle may be going into hibernation. We expected to see the start of the zonal flow for Cycle 25 by now, but we see no sign of it. This indicates that the start of Cycle 25 may be delayed to 2021 or 2022, or may not happen at all."

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Truth Be Told:
Russia Develops Lie Detecting ATM

Russia’s biggest retail bank is testing an ATM with a built-in lie detector.

New customers can talk to the machine to open an account and apply for credit.

From The New York Times:

The machine scans a passport, records fingerprints and takes a three-dimensional scan for facial recognition. And it uses voice-analysis software to help assess whether the person is truthfully answering questions that include “Are you employed?” and “At this moment, do you have any other outstanding loans?”

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Checking Into The Future:
Futuristic Airport Checkpoint Unveiled

The International Air Transport Association has unveiled a mock-up of what it describes as the 'Checkpoint of the Future'.

Tomorrow's air travellers will have to contend with iris scanners and pedestrian tunnels that analyse passengers for contraband such as drugs or explosives.

From Yahoo Finance:

"It's something that's long overdue," Pistole said at IATA's annual conference. "We're not at the checkpoint of the future yet but we're working toward that. I think eventually we will see something similar."

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Antimatter Matters:
Physicists Create Antimatter Briefly

laser.jpgPhysicists at Cern have created antimatter and held onto it for several minutes.

The ALPHA (Antihydrogen Laser PHysics Apparatus) experiment represents a breakthrough in the study of antimatter.

From Scientific American:

The lifetime of antihydrogen in the ALPHA trap is probably sufficient to begin those studies. "We think we're in a position to start measuring something," says ALPHA spokesperson Jeffrey Hangst of Aarhus University in Denmark. Initial studies will involve irradiating the anti-atoms with microwaves to try to engage them in a resonant interaction, flipping their spin like a compass needle swinging from north to south.

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Bad Call:
WHO Identifies Mobile Phone as 'Cancer Risk'

sms.jpgThe World Health Organisation has announced that the radiation from mobile phones may be carcinogenic.

The risk of developing cancer after using a mobile phone is considered to be on a par with exposure to petrol engine exhaust fumes.

From CNET:

The new determination from the WHO's IARC was established at a meeting in France where a team of 31 scientists from 14 countries, including the United States, considered peer-reviewed studies about the safety of cell phones. The team said that it had found enough evidence to consider exposure to cell phone radiation as "possibly carcinogenic to humans."

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By The Light of The Watery Moon:
The Moon Has More Water Than Previously Expected

Scientists now believe that the Moon has far more water than previously suspected.

Analysis of volcanic glass beads found on the Moon in 1972 has revealed a water level comparable to that found in Earth's upper mantle magma.

From Discover:

In this new research, the scientists found (in 2008, actually, but their results are now confirmed) that the beads have a water content of about 750 parts per million, roughly equivalent to what you’d find in magma in the Earth’s upper mantle. That’s very surprising; many of the rocks on the Moon’s surface are very dry*, which for years has led scientists to assume the Moon itself was very dry.

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The New Line:
Amazon Tribe Show Geometry is Innate

Researchers have conducted tests on an Amazonian tribe to show that our understanding of geometry is innate rather than learned.

The Mundurucu have only approximate terms for numbers and no words for shapes such as squares and triangles but they found concepts of geometry easy to grasp.

From BBC News:

The Mundurucu people's responses to the questions were roughly as accurate as those of the French and US respondents; they seemed to have an intuition about lines and geometric shapes without formal education or even the relevant words.

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Taking The Piss:
Netherlands Exports Urine For Drug Manufacture

Pregnant women in the Netherlands are donating their urine in a unique exercise.

A hormone is extracted from their urine and used to create a fertility drug.

From Radio Netherlands Worldwide:

The pregnant women’s urine contains the hormone Human chorionic gonadotropin, or HCG. It’s used in the pharmaceutical industry to make a drug for women with fertility problems, to increase their chances of getting pregnant. Mothers for Mothers has been collecting urine from volunteer donors for as long as 80 years. The scheme is unique in the world.

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Looking for ET:
Searching for Alien Life on 86 Planets

closeencounters.jpgScientists have launched a new search for extra-terrestrial life on 86 Earth-like planets.

While none of these worlds are guaranteed to be habitable, they have surface temperatures that could support life as we know it.

From PhysOrg:

"Our search employs the largest fully steerable radio telescope on the planet, and the most sensitive radio telescope in the world capable of undertaking a SETI search of this kind," Siemion told AFP.

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Sorry, Where Was I?
The Easily Distracted Have Too Much Grey Matter

Oh there's a robin pecking outside the window. Sorry, I should be paying more attention.

It turns out that the easily distracted may have an excess of grey matter.

From New Scientist:

The most obvious difference between those who had the highest questionnaire scores – the most easily distracted – and those with low scores was the volume of grey matter in a region of the brain known as the left superior parietal lobe (SPL). Specifically, the easily distracted tended to have more grey matter here.

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Time's Up:
Time May Not Be Dimension

Does time exist or is it a human creation?

Two recent scientific papers suggest that time may not be a discrete entity but is the result of human cognition.

From PhysOrg:

“Einstein said, ‘Time has no independent existence apart from the order of events by which we measure it,’” Sorli told PhysOrg.com. “Time is exactly the order of events: this is my conclusion.”

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Sunny Delight:
Nanotech Boosts Solar Cell Efficiency 80%

Researchers have used nanotech to boost the efficiency of solar cells by 80%.

They developed a way to construct solar cells from 'nanocones', resulting in higher efficiency.

From Science Blog:

“The important concept behind our invention is that the nanocone shape generates a high electric field in the vicinity of the tip junction, effectively separating, injecting and collecting minority carriers, resulting in a higher efficiency than that of a conventional planar cell made with the same materials,” Xu said.

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Porked:
Chinese Pork Tainted With Steroids

Chinese consumers are falling ill after eating pork contaminated with steroids.

Hundreds of people are thought to have consumed pork tainted with Clenbuterol and Ractopamine.

From NPR:

Chinese livestock farmers began using clenbuterol in pig feed in the late 1980s to boost growth and get animals to market faster, but it was banned in 2002 as the health risks of eating the meat became better understood. Clenbuterol-tainted meat can cause dizziness, headaches, hand tremors, and other unpleasantness. It's especially risky for people with heart troubles.

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Starting Line:
Did the Universe Start Out as a 1D Line?

Whilst the Big Bang Theory is favoured by most physicists as an explanation for the universe's origins, there are alternative theories being advanced.

One states that our 3D universe originated as a 1D line that grew to become more intricate.

From MMN:

"In 1-D, there's a new sense of unification," Stojkovic told Life's Little Mysteries, a sister site to SPACE.com. "Right now, you see the diverse world because you're in 3-D. When you go down to 1-D, things become much simpler. Properties that distinguish all the different particles don't exist anymore, so they all become alike. There is no rotation. All you have is forward and backward, and energy moving in either direction."

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Deus Ex Machina:
Has the God Particle Been Discovered?

Rumours are growing that the elusive Higgs Boson may have been detected at the Large Hadron Collider.

Speculation began after a purported memo revealing the discovery made its way onto the web.

From LiveScience:

The controversial rumor is based on what appears to be a leaked internal note from physicists at the Large Hadron Collider (LHC), a 17-mile-long particle accelerator near Geneva, Switzerland. It's not entirely clear at this point if the memo is authentic, or what the data it refers to might mean — but the note already has researchers talking.

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Beam Me Up:
Quantum Teleportation Breakthrough

Researchers have successfully teleported light, a breakthrough in the emerging fields of quantum communications and computing.

While quantum teleportation has been theorised about for a decade, it has been difficult to put into practice.

From PhysOrg:

"Just about any quantum technology relies on quantum teleportation. The value of this discovery is that it allows us, for the first time, to quickly and reliably move quantum information around. This information can be carried by light, and it’s a powerful way to represent and process information. Previous attempts to transmit were either very slow or the information might be changed. This process means we will be able to move blocks of quantum information3 around within a computer or across a network, just as we do now with existing computer technologies.

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The New Aspirin?
Non-Euphoric Cannabis Breakthrough

cannabisplant.jpgCannabis is considered by many to be a wonder drug, but its euphoric qualities have held back widespread use as a mediciine.

Now a breakthrough has identified a way to use cannabis compounds for pain relief without the high.

From io9:

Physiologist Li Zhang and colleagues discovered that THC targets several parts of the nervous system, some of which are called inhibitory glycine receptors (GlyRs). These receptors, according to Zhang, help regulate "neuromotor activity, pain sensation, muscle relaxation and anxiety." He and his fellow researchers speculate that a synthetic THC could be made that targets just GlyRs - hence, a form of cannabis that works as a painkiller but doesn't get you high.

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Breast of Breed:
GM Cows Produce 'Human-Like' Milk

Scientists have genetically modified cows to produce milk similar to that from humans.

But GM campaigners are likely to be critical of the new development.

From The Sunday Telegraph:

The scientists also revealed at an exhibition at the China Agricultural University that they have boosted milk fat content by around 20 per cent and have also changed the levels of milk solids, making it closer to the composition of human milk as well as having the same immune-boosting properties.

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Making Ripples:
Comets Perturb Jupiter and Saturn's Rings

Ripples in the rings of Saturn and Jupiter have been traced back to collisions with cometary fragments that took place more than a decade ago.

In Jupiter's case, the culprit was the transit of comet Shoemaker-Levy 9 through our solar system in 1994.

From Science Daily:

"What's cool is we're finding evidence that a planet's rings can be affected by specific, traceable events that happened in the last 30 years, rather than a hundred million years ago," said Matthew Hedman, a Cassini imaging team associate, lead author of one of the papers, and a research associate at Cornell University, Ithaca, N.Y. "The solar system is a much more dynamic place than we gave it credit for."

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Hide & Seek:
Covert Robot Knows How to Hide

Lockheed Martn have developed a surveillance robot that can infiltrate a building whilst avoiding humans.

The robot uses lasers to create a 3D map of the building and has sensors to detect approaching footsteps.

From New Scientist:

"Lockheed Martin's approach does include a sort of basic theory of mind, in the sense that the robot makes assumptions about how to act covertly in the presence of humans," says Alan Wagner of the Georgia Institute of Technology in Atlanta, who works on artificial intelligence and robot deception.

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Seeing the Light:
Minature Lasers Could Revolutionise Computing

laser.jpgAs ever increasing amounts of data are transmitted over the internet, conventional technologies will begin to struggle with heavy loads.

But a newly developed minature laser could revolutionise the way we communicate.

From Science Daily:

"The new laser diodes represent a sharp departure from past commercial devices in how they are made," Deppe said from his lab inside the College of Optics and Photonics. "The new devices show almost no change in operation under stress conditions that cause commercial devices to rapidly fail."

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Steel This Bike:
Bicycle Made From Nylon as Strong as Steel

Aerospace company EADS have developed a bicycle made from nylon that is as strong as steel.

The bike's components are 'grown' from a fine nylon powde using a technique similar to 3D printing.

From Gizmag:

Complete sections are "grown" from the chosen structural material, with the wheels, bearings and axle incorporated within the process and built at the same time. EADS says that the nylon components produced by the ALM process are strong enough to replace steel or aluminum. Unsurprisingly perhaps for the company, the eight-bladed wheels are based on the scimitar propeller design of the Airbus A400M, and the bike's name follows a similar line to that of Airbus, the first EADS company to use the technology.

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Heavy Drinking:
Happy Hours Lead to Violence

lager.jpgResearchers at Cardiff University have established a link between 'happy hour' drinks promotions and alcohol-fuelled violence.

The study highlights the need for bar staff to be more vigilant about serving drinks to already intoxicated customers.

From ScienceDaily:

Dr Simon Moore, of Cardiff University's award-winning Violence and Society Research Group, who led the study, said: "Our findings clearly show that alcohol misuse and violence are not simply caused by drinkers' weaknesses. The way premises are run also contributes, suggesting the industry still has more to do in playing its part."

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A Quantum of Solace:
Quantum Computers Come One Step Closer

Quantum computers have come one step closer with the development of a quantum 'antenna'.

The antenna allows communication between memory cells on a quantum computing chip.

From Science Daily:

"The new technology offers the possibility to distribute entanglement. At the same time, we are able to target each memory cell individually," explains Rainer Blatt. The new quantum computer could be based on a chip with many micro traps, where ions communicate with each other through electromagnetic coupling. This new approach represents an important step towards practical quantum technologies for information processing.

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Rocket Science:
ISS Could Go Interplanetary

Nasa researchers have come up with an innovative and inexpensive solution for interplanetary travel.

They want to attach rockets to the International Space Station and turn it into a spaceship.

From Discovery:

The designers optimistically believe that such a planet-roaming "space station with rockets" could be ready by 2020 at a cost of under $4 billion. If this number is realistic, the vehicle would be cheaper than the projected costs for the "Apollo-on steroids" Orion capsule.

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Hot Stuff:
Iceland Looks to Magma for Energy

Iceland has been looking into hot springs as a way of generating energy.

When a borehole struck magma in 2009, it was seen as a setback initially.

But now researchers think that magma could be a huge source of energy for the country.

From PhysOrg:

"Because we drilled into magma, this borehole could now be a really high-quality geothermal well," said Peter Schiffmann, professor of geology at UC Davis and a member of the research team along with fellow UC Davis geology professor Robert Zierenberg and UC Davis graduate student Naomi Marks. The project was led by Wilfred Elders, a geology professor at UC Riverside.

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Source Code:
CEO Open Sources His Genome

paralleltelomerequadruple.pngOpen source software has made today's net possible -- many of the servers you use everyday rely on code released by the author for public use.

Manu Sporny, founder and CEO of Digital Bazaar, has taken the idea to the next level.

He has released around one million of his genetic markers into the public domain and ceded all rights to the data.

From Geek:

The body has around 10 million single-nucleotide polymorphisms (SNPs) – the genetic markers Manu shared – of which 23andme analyze 1 million by placing your saliva sample on a genotyping beadchip. Of those million, only 14,515 are known about in science, and only 160 are used by 23andme for analysis.

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Skynet Edges Closer:
Robots Share Abilities on Web

Researchers are working on a 'web for robots' that will allow the devices to share information over a network.

This could mean that robots could extend their programming to take on tasks they were not originally developed to do.

From Engadget:

It's not quite war-ready, but a new Skynet-like initiative called RoboEarth could have you reaching for your guide to automaton Armageddon sooner than you think. The network, which is dubbed the "World Wide Web for robots," was designed by a team of European scientists and engineers to allow robots to learn from the experience of their peers, thus enabling them to take on tasks that they weren't necessarily programmed to perform.

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Electricity in Mind:
Electric Brain Fields Unlock Secrets of Cognition

It has been assumed that brain function depends on neurons connected directly by synapses.

Now scientists believe that electric fields generated in the brain could cause unconnected neurons to fire.

From Caltech:

The brain—awake and sleeping—is awash in electrical activity, and not just from the individual pings of single neurons communicating with each other. In fact, the brain is enveloped in countless overlapping electric fields, generated by the neural circuits of scores of communicating neurons. The fields were once thought to be an "epiphenomenon" similar to the sound the heart makes—which is useful to the cardiologist diagnosing a faulty heart beat, but doesn't serve any purpose to the body, says Christof Koch, the Lois and Victor Troendle Professor of Cognitive and Behavioral Biology and professor of computation and neural systems at the California Institute of Technology (Caltech).
New work by Koch and neuroscientist Costas Anastassiou, a postdoctoral scholar in biology, and his colleagues, however, suggests that the fields do much more—and that they may, in fact, represent an additional form of neural communication.

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Fingered:
Getting Fingerprints From Clothing

It has been virtually impossible to get fingerprints from clothing until now.

Researchers have found a way to reveal prints using gold vapour.

From Gizmag:

The researchers used a method known as vacuum metal deposition that's already been used to recover print detail on smooth surfaces like carrier bags, plastics and glass since the 1970s, but has not previously been applied to fingerprint detection on fabrics.
The fabric is placed in a vacuum chamber. Gold is heated and evaporated and spread in a fine layer over the fabric. Heated zinc is then applied, which attaches to the gold layer where the fabric has no fingerprints, leaving the original fabric to show through where contact has been made.

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Bigger Than It Looks:
Universe Could Be 250 Times Larger Than Previously Thought

The size of the Universe is a topic that has exercised cosmologist's brains for decades.

A new statistical analysis indicates that the Universe may be 250 times larger than previously thought.

From Technology Review:

They say that the curvature of the Universe is tightly constrained around 0. In other words, the most likely model is that the Universe is flat. A flat Universe would also be infinite and their calculations are consistent with this too. These show that the Universe is at least 250 times bigger than the Hubble volume. (The Hubble volume is similar to the size of the observable universe.)

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A Load of Gas?:
Synthetic Petroleum From Hydrogen

Scientists have developed a synthetic form of petroleum derived from hydrogen.

The hydrogen-based fuel may be suitable for use in petrol engines without modification.

From Gizmag:

“We have developed new micro-beads that can be used in an existing gasoline or petrol vehicle to replace oil-based fuels,” said Voller. “Early indications are that the micro-beads can be used in existing vehicles without engine modification.”
“The materials are hydrogen-based, and so when used produce no carbon emissions at the point of use, in a similar way to electric vehicles”, said Voller.

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Old Amoeba Had a Farm:
The Amoeba That Farms Bacteria

A species of amoeba that farms its own food source has been discovered.

Dictyostelium discoideum spores contain the bacteria that the slime mould relies on.

From BBC News:

Once Ms Brock spotted the amoebas' fruiting bodies carrying bacteria, she measured how many of the spores were responsible, finding that about a third of them traveled with their bacterial seeds.
The behaviour seems to be genetically built-in; clones of the "farmer" amoebas in turn developed into farmers, while clones of the "non-farmers" did not.
"To think of a single-celled amoeba performing something that you could consider farming, I think, is surprising," Ms Brock said.

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The Worm That Turned:
Controlling Worms With Laser Light

Scientists have discovered a way to control the behaviour of worms using laser light.

Individual neurons can be turned on and off using an emerging technique known as Optogenetics.

From Science News:

“This tool allows us to go in and poke and prod at those neurons in an animal as it’s moving, and see exactly what each neuron does,” says study coauthor Andrew Leifer of Harvard University.
The system is based on the emerging field of optogenetics, in which light is used to turn cells on or off. Leifer and his colleagues genetically engineered light-responsive molecules into particular groups of cells in the worm.
Then, a computer program that the team developed figures out where in the microscope’s field of view a target cell is. Once the cell is pinpointed, the program directs lasers so that a tiny beam of light hits the cell.

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Woolly Thinking:
Scientist Plans to Resurrect Mammoths

Advances in genetics have opened up the possibility that long extinct species could be resurrected.

So a Japanese scientist is on the hunt for a sample of soft tissue from a Wooly Mammoth that could lead to the return of the species.

From the Daily Telegraph:

Previous efforts in the 1990s to recover nuclei in cells from the skin and muscle tissue from mammoths found in the Siberian permafrost failed because they had been too badly damaged by the extreme cold.
But a technique pioneered in 2008 by Dr. Teruhiko Wakayama, of the Riken Centre for Developmental Biology, was successful in cloning a mouse from the cells of another mouse that had been frozen for 16 years.

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That Which is Not Dead Can Eternal Lie:
34,000 Year Old Bacteria Discovered

A scientist has discovered 34,000 year old bacteria still living inside salt crystals.

As their DNA would have been damaged over the years, the discovery could shed light on how DNA repair takes place.

From Yahoo News:

"It was actually a very big surprise to me," said Brian Schubert, who discovered ancient bacteria living within tiny, fluid-filled chambers inside the salt crystals.
Salt crystals grow very quickly, imprisoning whatever happens to be floating - or living - nearby inside tiny bubbles just a few microns across, akin to naturally made, miniature snow-globes.
"It's permanently sealed inside the salt, like little time capsules," said Tim Lowenstein, a professor in the geology department at Binghamton University and Schubert's advisor at the time.

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There's a Fly in My Soup:
Insects as a Green Source of Protein

ant.jpgEnvironmental problems could pose a threat to the world's food supply. Our current system of intensive farming may not have much of a future.

But scientists have come up with an alternative to the resource-intensive raising of livestock: insects.

From Science Daily:

The study indicates that proteins originating from insects in principle form an environmentally-friendly alternative to proteins from meat originating from conventional livestock. Further research is required to ascertain whether the production of a kilogram of insect protein is also more environmentally friendly than conventional animal protein when the entire production chain is taken into account.

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Regeneration:
Turning Old Black & White TV Programmes Into Colour

The BBC is notorious for having wiped hundreds of TV programmes in the 1970s to save on the costs of video tape.

Over a hundred episodes of Doctor Who were lost. But a number of episodes were transferred to black & white 16mm film for export to countries such as Australia that were still broadcasting in monochrome.

Now restoration experts are using a clever application of science to restore these black and white prints to full colour.

From Wired UK:

Their method is a refined version of that trialled on the 2009 Planet of the Daleks rerelease; it is now being deployed on a seven-part 1970 Jon Pertwee adventure, The Ambassadors of Death. "It seemed almost impossible," says Steve Roberts, 35, the team's supervisor and a BBC senior engineer. "But when they made the black-and-white recordings, they didn't filter off the colour carrier [encoded as a 'chroma dot' pattern in each frame], which for the last few decades has been nothing more than an annoyance." Team member Richard Russell used the signal to reverse-engineer raw colour pictures that could be retouched frame by frame. "It's very, very labour intensive -- several hundred man hours' work every episode," says Roberts. Luckily, a new "quadrant editor" is helping them to produce better source material upfront, so they hope to deliver the Ambassadors episodes to the BBC within weeks.

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Everything:
Project Aims to Simulate Entirety of Earth

earth-thumb.jpgA group of scientists hope to create a simulator that can replicate everything happening on Earth.

The Living Earth Simulator aims to improve scientific understanding of what is taking place on the planet.

From BBC News:

Thanks to projects such as the Large Hadron Collider, the particle accelerator built by Cern, scientists know more about the early universe than they do about our own planet, claims Dr Helbing.
What is needed is a knowledge accelerator, to collide different branches of knowledge, he says.
"Revealing the hidden laws and processes underlying societies constitutes the most pressing scientific grand challenge of our century."

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The Rules of Attraction:
Why Does Earth's Magnetic North Pole Drift?

As well as the geographic north pole, there is a magnetic north pole nearby. But the location of the magnetic pole moves from year to year for reasons unknown.

Finding an explanation for the phenomenon could unlock some of the secrets held beneath Earth's crust.

From Scientific American:

The north magnetic pole (NMP), also known as the dip pole, is the point on Earth where the planet's magnetic field points straight down into the ground. Scottish explorer James Clark Ross first located the NMP in 1831 on the Boothia Peninsula in what is now northern Canada, and with the planting of a flag claimed it for Great Britain.
But the NMP drifts from year to year as geophysical processes within Earth change. For more than 150 years after Ross's measurement its movement was gradual, generally less than 15 kilometers per year. But then, in the 1990s, it picked up speed in a big way, bolting north–northwest into the Arctic Ocean at more than 55 kilometers per year. If it keeps going it could pass the geographic north pole in a decade or so and carry on toward Siberia. But why?

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Wildlife:
Drug-Using Animals

paddoes.jpgIt may come as a surprise to learn that animals in the wild make use of psychoactive substances just like humans.

Many recreational drugs may in fact have been discovered by observing the behaviour of animals.

From PJ Online:

On the prairies of the south-west US, horses and other grazing mammals can become addicted to hallucinogen-containing plants known generically as locoweed. These plants, mainly species of Astragalus and Oxytropis, are normally avoided, but animals that try them can come back time and again for a repeat fix. Symptoms include altered gait, aimless wandering, impaired vision, erratic behaviour and listlessness.
In South America’s rain forests, jaguars have been filmed behaving in a kittenish manner after gnawing the bitter roots and bark of yage (Banisteriopsis caapi), a hallucinogenic vine that is also used by native tribes in ritualistic ceremonies. Some anthropologists believe that man first learnt to use the drug after watching jaguars

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Light Touch:
A Hands-free Way to Review Radiological Images

simontam.jpgMicrosoft's Kinect motion-controller has been adapted to provide doctors with a hands-free way to review radiological images.

This allows them to maintain sterility by eliminating the need to touch any physical controls that could harbour pathogens.

From Gizmag:

With software based on ofxKinect, libfreenect and open frameworks, the prototype uses a mix of voice control via a wireless headset and gesture control via the Kinect’s 3D video camera to control OsiriX, an image processing application specially designed for navigation and visualization of medical images. The user can switch modes using voice commands and then navigate the images – zooming in or out and moving the view through a 3D image – using one or two-handed gestures.
While the focus of the Virtopsy project is to make use of new technologies to replace standard autopsy with minimally invasive procedures, such a touch-free interface also has obvious benefits for surgeons needing to navigate medical images in a surgery environment. Gesture and voice controls would allow them to maintain sterility by doing away with the need to directly touch any keyboards, buttons, joysticks or touchscreens.

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The End of the World is Not Nigh:
Large Hadron Collider Doesn't Create Black Holes

The Large Hadron Collider (LHC) was mired in controversy before its launch when some thought that it could generate microscopic black holes. There were even allegations that the Earth could get sucked into one of these black holes.

But it turns out that Armageddon will probably not be caused by the LHC. Experiments that theoretically could have generated microscopic black holes have failed to yield any evidence of their existence.

From PhysOrg:

Microscopic black holes are predicted to exist in some theoretical models that attempt to unify General Relativity and Quantum Mechanics by postulating the existence of extra "curled-up" dimensions, in addition to the three familiar spatial dimensions.
At the high energies of the Large Hadron Collider, such theories predict that particles may collide "closely enough" to be sensitive to these postulated extra dimensions. In such a case, the colliding particles could interact gravitationally with strengths similar to those of the other three fundamental forces – the Electromagnetic, Weak and Strong interactions. The two colliding particles might then form a microscopic black hole.

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The Meme Pool:
Tracing The Development of Culture Through Books

Since 2004, Google have scanned over 15 million books, an electronic archive that represents 12 per cent of all the books ever published.

Researchers have used this database to trace the development of language and culture over two centuries.

From Discover:

The project began back in 2007, when the duo published a paper showing that verbs become more regular over time. From Beowulf to Harry Potter, the past forms of many irregular verbs have taken on the standard “-ed” suffix, in a way that fits a startlingly simple mathematical formula. On wrapping up the project, they marvelled at how hard it was to collect the data in the first place. Michel says, “We realized that the study of the evolution of culture needed something like a genome, a dataset so powerful that it would enable such analyses to be done rapidly, on any topic, not just irregular verbs. And we noticed that some of those really obscure books we used… had meanwhile popped up on Google Books. We put two and two together.”

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Iran Out of Time:
Stuxnet Virus 'Delays Iranian Nuclear Programme by Two Years'

According to a computer expert, the Stuxnet virus that attacked Iran’s nuclear facilities has set back the Islamic Republic’s nuclear program by two years.

It is believed that Israel’s Military Intelligence Unit 8200 was the creator of the software, possibly in league with the US.

From The Jerusalem Post:

Eric Byres, a computer security expert who runs a website called Tofino Security, which provides solutions for industrial companies with Stuxnet-related problems, told the Post on Tuesday that the number of Iranians visiting his site had jumped tremendously in recent weeks – a likely indication that the virus is still causing great disarray at Iranian nuclear facilities.
“What caught our attention was that last year we maybe had one or two people from Iran trying to access the secure areas on our site,” Byres said. “Iran was never on the map for us, and all of a sudden we are now getting massive numbers of people going to our website, and people who we can identify as being from Iran.”

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Hot Destination:
Chernobyl Open For Tourism

Ukraine is planning to open up the exclusion zone around the Chernobyl reactor to visitors from next year.

The exclusion zone, a 30 mile radius from the exploded reactor, was evacuated and sealed off in the aftermath of the explosion.

Several hundred evacuees have returned to their villages in the zone inspite of a government ban. Unofficial tours of the area also take place illegally.

From The Washington Post:

Emergency Situations Ministry spokeswoman Yulia Yershova said experts are developing travel routes that will be both medically safe and informative for Ukrainians as well as foreign visitors. She did not give an exact date when the tours were expected to begin.
"There are things to see there if one follows the official route and doesn't stray away from the group," Yershova told The Associated Press. "Though it is a very sad story."

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Gut Thinking:
Programming Bacteria Like a Computer

voight.jpgScientists have found a way to program bacteria like a computer. Logic gates -- the basic building blocks of all computers -- are constructed using genes and inserted into E. coli bacteria.

The genes mimic digital processes and result in computational communication between cells.

From CNN:

“DNA is sort of the programming language for life,” Voigt told CNN in a telephone interview over the weekend.
“It's not that we're trying to replace computers with living cells. But it means we could gain programmable control of everything biology can do. You'd like to be able to control all these programs.”
Voigt said the ultimate aim is to create intricate computer code that can be read by living cells.
“We want to create a programming language for bacteria,” he said. “We want to program code for bacteria just like you would for a computer. A lot of the other work my lab does has to do with coming up with algorithms – just like a programmer would do – and converting that into a DNA sequence.”

Image credit: UCSF

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Smokin':
Batteries Enhanced With Tobacco Virus

While electronics get smaller and faster all the time, batteries remain stubbornly large. A clever application of a virus that blights tobacco plants could change all that.

Scientists have found a way to bind the Tobacco Mosaic Virus perpendicularly to the metallic surface of a battery electrode. This results in a ten-fold increase in energy capacity over a standard lithium-ion battery

From PhysOrg:

"The resulting batteries are a leap forward in many ways and will be ideal for use not only in small electronic devices but in novel applications that have been limited so far by the size of the required battery," said Ghodssi, director of the Institute for Systems Research and Herbert Rabin Professor of Electrical and Computer Engineering at the Clark School. "The technology that we have developed can be used to produce energy storage devices for integrated microsystems such as wireless sensors networks. These systems have to be really small in size--millimeter or sub-millimeter--so that they can be deployed in large numbers in remote environments for applications like homeland security, agriculture, environmental monitoring and more; to power these devices, equally small batteries are required, without compromising in performance."

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Something for Nothing:
Generating Matter From a Vacuum?

laser.jpgNew equations show that a high-energy electron beam combined with an intense laser pulse could rip apart a vacuum into its fundamental matter and antimatter components.

A resulting cascade of events would also additional pairs of particles and antiparticles. From a single electron, several hundred particles could be produced.

From Science Daily:

At the heart of this work is the idea that a vacuum is not exactly nothing.
"It is better to say, following theoretical physicist Paul Dirac, that a vacuum, or nothing, is the combination of matter and antimatter -- particles and antiparticles.Their density is tremendous, but we cannot perceive any of them because their observable effects entirely cancel each other out," Sokolov said.

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Blue Genes:
Propensity for Casual Sex May Be Genetic

Genetics and neurobiology seem to influence sexual propensities and tendencies. But the exact mechanisms are poorly understood.

A new study has now identified a gene that could result in behaviours such as uncommitted sex and one night stands.

From Medical Daily:

In a first of its kind study, a team of investigators led by Justin Garcia, a SUNY Doctoral Diversity Fellow in the laboratory of evolutionary anthropology and health at Binghamton University, State University of New York, has taken a broad look at sexual behavior, matching choices with genes and has come up with a new theory on what makes humans 'tick' when it comes to sexual activity. The biggest culprit seems to be the dopamine receptor D4 polymorphism, or DRD4 gene. Already linked to sensation-seeking behavior such as alcohol use and gambling, DRD4 is known to influence the brain's chemistry and subsequently, an individual's behavior.
"We already know that while many people experience sexual activity, the circumstances, meaning and behavior is different for each person," said Garcia. "Some will experience sex with committed romantic partners, others in uncommitted one-night stands. Many will experience multiple types of sexual relationships, some even occurring at the same time, while others will exchange sex for resources or money. What we didn't know was how we are motivated to engage in one form and not another, particularly when it comes to promiscuity and infidelity."

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Aliens Amongst Us:
Arsenic-loving Lifeform Discovered in Californian Lake

All life on earth has been previously been thought to contain six key elements: oxygen, hydrogen, carbon, nitrogen, sulphur, and phosphorus.

But Nasa scientists have discovered a bacterium in a Californian lake that seems to use arsenic in its molecular make-up instead of phosphorus.

From The Guardian:

Christened GFAJ-1, the microbe lends weight to the notion held by some astrobiologists that there might be "weird" forms of life on Earth, as yet undiscovered, that use elements other than the basic six in their metabolism. Among those who have speculated is Prof Paul Davies, a cosmologist at Arizona State University and an author on the latest research.
"This organism has dual capability – it can grow with either phosphorus or arsenic," said Davies. "That makes it very peculiar, though it falls short of being some form of truly 'alien' life belonging to a different tree of life with a separate origin. However, GFAJ-1 may be a pointer to even weirder organisms. The holy grail would be a microbe that contained no phosphorus at all."

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Grown & Flown:
First Airbus Fuelled by Biofuel Flies

Aviation is an industry under fire for contributing to climate change through massive carbon dioxide emissions.

For the industry to survive, it has to find ways to overcome environmental objections. Dependence on fossil fuels also makes airlines vulnerable to volatility in the oil industry.

Now Brazil’s largest airline, TAM Airlines, has successfully conducted the first test flight of an Airbus passenger jet fuelled with biofuel derived from Jatropha.

From Gizmag:

The biofuel used to power the TAM Airlines A320 was a 50 percent blend of conventional aviation kerosene and locally-sourced Brazilian Jatropha-based bio-kerosene. Jatropha is seen as one of the best candidates for biofuel production as it is drought and pest resistant and produces seeds containing 27–40 percent oil, averaging 34.4 percent. As it contains several toxic compounds, it also avoids the controversy surrounding the use of traditional food crops for the production of biofuel.
The A320, powered by CFM56 engines, took off from Galeão Antonio Carlos Jobim International airport in Rio de Janeiro and performed a 45-minute flight before returning to its point of origin. The technical flight was approved by Airbus, the engine provider CFM International, and was authorized by aviation authorities in Europe (the European Aviation Safety Agency - EASA), and Brazil (National Civil Aviation Agency - ANAC).

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Lights, Camera, Amazon:
Online Retail Giant Launches Movie Studio

Amazon have made millions of dollars by selling movies online. But the studio is going further by going into the moviemaking business.

A new online site will allow anyone to submit scripts that other users can use to make test movies. The best movies will attract cash prizes from Amazon and could even be picked up by Warner Bros.

From Good Gear Guide:

The new Internet movie studio will allow writers to upload screenplays to its website where the global Internet audience can read them and offer feedback, or producers/directors can use them to make test movies. The test movies, which must be at least 70 minutes in length, can also be uploaded.
Amazon Studios will also award monthly cash prizes to the top submissions of US$100,000 for the best movie each month and US$20,000 to the two best scripts. They'll also be an annual award of $1 million for the best movie and $100,000 for the best script. In all, the company expects to hand out up to US$2.7 million for submissions received by Dec. 31, it said on its website.

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The Sweet Science:
Making Graphene With Sugar

Graphene, a single-layer of carbon atoms, has the potential to be one of the most revolutionary materials ever created.

One obstacle to its widespread adoption is whether mass production of graphene can be economically viable.

Now Zhengzong Sun, a fourth-year graduate student at Rice University, has discovered a way to manufacture graphene from ordinary table sugar.

From Gizmag:

For pristine graphene, Sun started with a thin film of poly (methyl methacrylate) (PMMA) – better known as Plexiglass – spun onto a copper substrate that acted as a catalyst. Under heat and low pressure, hydrogen and argon gas was flowed over the PMMA for 10 minutes, reducing it to pure carbon and turning the film into a single layer of graphene. Sun was able to control the thickness of the PMMA-derived graphene by changing the gas-flow rate.
When he turned to other carbon sources, including a fine powder of sucrose – aka table sugar – is when things got interesting, says Sun. "We thought it would be interesting to try this stuff," he said. "While other labs were changing the metal catalysts, we tried changing the carbon sources."

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Mirror, Mirror:
How We Share Actions & Emotions

Experiencing empathy is a truly human trait -- when we see someone in distress, we feel that emotion.

Now neurologists have made a breakthrough discovery that explains this phenomenon.

'Mirror neurons' allow our brain to emulate what we see. Unlocking their secrets could revolutionise neurology in the same way that the discovery of DNA changed biology forever.

From The Daily Galaxy:

Vilayanur Ramachandran is a neurologist at the University of California-San Diego and co-author of Phantoms in the Brain: Probing the Mysteries of the Human Mind writes that "Giacomo Rizzolatti at the University of Parma has elegantly explored the properties of neurons - the so-called "mirror" neurons, or "monkey see, monkey do" neurons. His research indicates that any given cell in this region will fire when a test monkey performs a single, highly specific action with its hand: pulling, pushing, tugging, picking up, grasping, etc. In addition, it appears that different neurons fire in response to different actions."

Image credit: Exploratorium / CC BY-NC-SA 3.0

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See The Light:
Using Light to Kill Superbugs

Hospitals are struggling to cope with so-called superbugs such as MRSA and C. difficile.

These diseases are easily transmissible in confined environments and resist conventional drug treatment.

Now researchers in Scotland have developed a pioneering lighting system that can kill superbugs.

From ScienceDaily:

The technology decontaminates the air and exposed surfaces by bathing them in a narrow spectrum of visible-light wavelengths, known as HINS-light.
Clinical trials at Glasgow Royal Infirmary have shown that the HINS-light Environmental Decontamination System provides significantly greater reductions of bacterial pathogens in the hospital environment than can be achieved by cleaning and disinfection alone, providing a huge step forward in hospitals' ability to prevent the spread of infection.

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Gulp:
Scientist Discover How Cats Lap Up Water

A black cat has inspired scientists to study how felines use their tongues to lap up water.

While dogs form their tongues into a scoop that shovels water into their mouths, cats have a much more sophisticated technique.

Using their instinct, cats exploit gravity and inertia to flick water into their mouths with only the tip of the tongue.

From the New York Times:

Cats lap water so fast that the human eye cannot follow what is happening, which is why the trick had apparently escaped attention until now. With the use of high-speed photography, the neatness of the feline solution has been captured.

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The Golden Age:
Nanoscale Gold Turns Trees Into Street Lights

Street lights consume valuable energy and are often made with toxic chemicals. One scientist wondered if there was a better way to provide lighting.

Now a new process could turn trees into sources of light that provide their own power.

From Inhabitat:

By implanting the gold nanoparticles into the leaves of the Bacopa caroliniana plants, the scientists were able to induce the chlorophyll in the leaves to produce a red emission. Under a high wavelength of ultraviolet light, the gold nanoparticles were able to produce a blue-violet fluorescence to trigger a red emission in the surrounding chlorophyll.

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Hi-Tech Heroes:
Real-Life Superheroes & Their Gadgets

You probably think that superheroes are only found in comic books and movies. Think again.

It turns out that there's a sub-culture of costumed avengers on the streets of America. The same ingenuity behind Silicon Valley is now being employed to arm these crimefighters with futuristic gadgets.

From Gizmag:

Yes, there are real-life superheroes. And no, we’re not just referring to firefighters, paramedics, and other heroic people who we’re used to seeing coming to the rescue of others. We’re talking about costume-wearing, identity-concealing, cool-name-having people who fight crime, pollution, or other evils in their own communities, on their own time, and at their own risk. Many of them actually patrol the city streets, ready to intervene if they see trouble brewing – and being ready includes having the right tools.

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The Spice of Life:
Turmeric Could Prevent Liver Damage
by Simon Magus

Curcumin, a compound found in turmeric, holds promise in preventing or treating liver damage from an advanced form of a condition known as fatty liver disease.

As well as giving flavour to curry, turmeric has been used by the Chinese to make traditional medicines for thousands of years.

Researchers hope that curcumin could be the key to treating an increasingly common kind of fatty liver disease called non-alcoholic steatohepatitis (NASH).

Linked to obesity and weight gain, NASH affects 3 to 4 per cent of US adults and can lead to a type of liver damage called liver fibrosis and possibly cirrhosis, liver cancer, and death.

"My laboratory studies the molecular mechanism of liver fibrosis and is searching for natural ways to prevent and treat this liver damage," said Dr Anping Chen, director of research at the pathology department of Saint Louis University.

"While research in an animal model and human clinical trials are needed, our study suggests that curcumin may be an effective therapy to treat and prevent liver fibrosis, which is associated with non-alcoholic steatohepatitis."

High levels of blood leptin, glucose, and insulin are commonly found in human patients with obesity and type 2 diabetes, which might contribute to NASH-associated liver fibrosis.

Dr Chen's most recent work tested the effect of curcumin on leptin levels in the liver -- elevated leptin could lead to liver fibrosis.

High levels of leptin activate hepatic stellate cells, which are the cells that cause overproduction of the collagen protein -- a major feature of liver fibrosis.

The experiments were conducted in vitro, rather than on human subjects.

"Leptin plays a critical role in the development of liver fibrosis," Dr Chen said.

The researchers found that among other activities, curcumin eliminated the effects of leptin on activating hepatic stellate cells, which short-circuited the development of liver damage.

Further research will be required before curcumin can be employed as a treatment for NASH.

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A Snowball's Chance:
Ice-Covered Earth Facilitated Rise of Life on Earth
by Sir Thomas More

Scientists have found new evidence linking 'Snowball Earth' glacial events to the rise of early animals.

The controversial Snowball Earth hypothesis posits that 750 to 580 million years ago, the Earth was covered from pole to pole by a thick sheet of ice lasting for millions of years.

The researchers argue that the oceans in the aftermath of these events were rich in phosphorus, a nutrient that controls the abundance of life in the oceans.

Phosphorus concentrations through Earth's history were tracked by analysing the composition of iron-rich chemical precipitates that accumulated on the seafloor and scavenged phosphorus from seawater.

Analysis revealed that there was a pronounced spike in marine phosphorus levels in the mid-Neoproterozoic era (from ~750 to ~635 million years ago).

To explain these anomalously high concentrations, the researchers argue that the increase in erosion and chemical weathering on land that accompanied Snowball Earth glacial events led to the high amounts phosphorus in the ocean.

The abundance of this nutrient, which is essential for life, in turn, led to a spike in oxygen production via photosynthesis and its accumulation in the atmosphere, facilitating the emergence of complex life on Earth.

"In the geological record, we found a signature for high marine phosphorus concentrations appearing in the immediate aftermath of the Snowball Earth glacial events," said Noah Planavsky, lead author and a graduate student at the University of California in Riverside.

"Phosphorus ultimately limits net primary productivity on geological timescales."

"Therefore, high marine phosphorus levels would have facilitated a shift to a more oxygen-rich ocean-atmosphere system."

"This shift could have paved the way for the rise of animals and their ecological diversification."

"Our work provides a mechanistic link between extensive Neoproterozoic glaciations and early animal evolution."

Planavsky explained the link between marine phosphorus concentrations and the levels of oxygen in the atmosphere.

"High phosphorus levels would have increased biological productivity in the ocean and the associated production of oxygen by photosynthesis," he said.

"Much of this organic matter is consumed, in turn, as a result of respiration reactions that also consume oxygen."

"However, the burial of some proportion of the organic matter results in a net increase of oxygen levels in the atmosphere."

Scientists formerly believed that geochemical conditions in the iron-rich ocean would have led to low phosphorus concentrations.

The researchers found no evidence of a phosphorus crisis after Snowball Earth glacial events.

But they did find indications of an abundance of phosphorus.

"There are several known chemical fingerprints for increasing oxygen in the ocean and, by inference, in the atmosphere during the middle part of Neoproterozoic, and the rise of animals is an expected consequence," said Professor Timothy Lyons of the University of California in Riverside, senior investigator in the study.

"But our results may be the first to capture the nutrient driver that was behind this major step in the history of life, and that driver was ultimately tied to the extreme climate of the period."

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Sting in the Tail:
Scorpion Venom Could Reduce Heart Bypass Failures
by Simon Magus

A toxin found in the venom of the Central American bark scorpion (Centruroides margaritatus) could hold the key to reducing heart bypass failures.

Margatoxin is at least 100 times more potent at preventing neointimal hyperplasia -- the most common cause of bypass graft failure -- than any other known compound.

"It's staggeringly potent," said lead author Professor David Beech of the University of Leeds.

"We're talking about needing very few molecules in order to obtain an effect."

The toxin works by inhibiting the activity of a specific potassium ion channel.

"We knew from experimental research in immunology that the ion channel Kv1.3 is involved in activating immune system responses and that it's linked with chronic inflammation problems in the immune system, such as those you see with multiple sclerosis," Professor Beech said.

"Since our own studies had identified Kv1.3's presence in injured blood vessels, which are also often complicated by chronic inflammation, we wanted to see if the same immune system blockers would inhibit neointimal hyperplasia."

Neointimal hyperplasia is the blood vessel's response to injury.

It triggers the growth of new cells, causing chronic obstruction on the inside of the vessel.

"There were a number of good blockers of this ion channel available to screen."

"Several compounds are developed from plants, and one comes from scorpion venom, but margatoxin was the most potent of all these compounds by a significant margin."

Professor Beech says margatoxin could potentially be taken forward as a spray-on treatment to the vein itself once it's been removed and is waiting to be grafted onto the heart.

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Love is the Drug:
The Science of Falling in Love
by Sir Thomas More

A new meta-analysis study, 'The Neuroimaging of Love', reveals falling in love can elicit not only the same euphoric feeling as using cocaine.

Researchers also found that falling in love only takes about a fifth of a second.

When a person falls in love, 12 areas of the brain work in tandem to release euphoria-inducing chemicals such as dopamine, oxytocin, adrenaline and vasopression.

The love feeling also affects sophisticated cognitive functions, such as mental representation, metaphors and body image.

But does the heart fall in love, or the brain?

"That’s a tricky question always," said Professor Ortigue.

"I would say the brain, but the heart is also related because the complex concept of love is formed by both bottom-up and top-down processes from the brain to the heart and vice versa."

"For instance, activation in some parts of the brain can generate stimulations to the heart, butterflies in the stomach."

"Some symptoms we sometimes feel as a manifestation of the heart may sometimes be coming from the brain."

Other researchers also found blood levels of nerve growth factor also increased.

Those levels were significantly higher in couples who had just fallen in love.

This molecule plays an important role in the social chemistry of humans, or the phenomenon of 'love at first sight.'

"These results confirm love has a scientific basis," Professor Ortigue said.

The findings have major implications for neuroscience and mental health research.

When love doesn’t work out, it can be a significant cause of emotional stress and depression.

"It’s another probe into the brain and into the mind of a patient," said Professor Origue.

"By understanding why they fall in love and why they are so heartbroken, they can use new therapies."

Image credit: The Justified Sinner | BY-NC-SA 2.0

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Push & Pull:
Correcting Sensory Eye Dominance
by Sir Thomas More

eye.jpgResearchers appear to have found a better way to correct sensory eye dominance, a condition in which an imbalance between the eyes compromises fine depth perception.

The key is a push-pull training method in which the weak eye is made to work while vision in the strong eye is actively suppressed.

"After a 10-day training period, we found our participants' sensory eye dominance is significantly reduced as the two eyes become more balanced," said Teng Leng Ooi of Pennsylvania College of Optometry at Salus University.

"As a consequence, their depth perception also improves significantly."

Most people have excellent three-dimensional depth perception because their two eyes work together as an even team.

That's why it is easier to thread a needle with two eyes opened than with one eye closed.

"By using the visual images from both eyes, the brain can construct a 3D visual world that enables us to precisely judge the depth of objects," said Zijiang He of Pennsylvania College of Optometry at Salus University.

For that process to work optimally, the two eyes have to contribute equally.

If one eye becomes stronger, depth perception degrades.

In extreme cases, that imbalance is similar to amblyopia, more commonly known as lazy eye, a condition that affects two to three per cent of children in the United States.

The researchers don't yet understand exactly how this push-pull training method works to readjust the balance between the eyes.

"Possibly, by causing the strong eye to be suppressed at all times during the training, we reduce the inhibitory hold of the strong eye on the weak eye," Ooi said.

Further behavioural and neurophysiological studies are needed to explore the mechanism.

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Spin When You're Winning:
Graphene Yields Electron Spin Computing Breakthrough
by Simon Magus

Physicists at the University of California, Riverside have taken an important step forward in developing a 'spin computer' by successfully achieving 'tunnelling spin injection' into graphene.

Spin computers, when developed, would utilise the electron's spin state to store and process vast amounts of information while using less energy, generating less heat, and performing much faster than conventional computers in use today.

Graphene, brought into the limelight by this year's Nobel Prize in physics, is a single-atom-thick sheet of carbon atoms arrayed in a honeycomb pattern.

Extremely strong and flexible, it is a good conductor of electricity and capable of resisting heat.

"Graphene has among the best spin transport characteristics of any material at room temperature, which makes it a promising candidate for use in spin computers," said Professor Roland Kawakami of the University of California.

"But electrical spin injection from a ferromagnetic electrode into graphene is inefficient."

"An even greater concern is that the observed spin lifetimes are thousands of times shorter than expected theoretically."

"We would like longer spin lifetimes because the longer the lifetime, the more computational operations you can do."

To address these problems, Professor Kawakami and his colleagues inserted a nanometer-thick insulating layer, known as a 'tunnel barrier' in between the ferromagnetic electrode and the graphene layer.

They found that the spin injection efficiency increased dramatically.

"We found a 30-fold increase in the efficiency of how spins were being injected by quantum tunnelling across the insulator and into graphene," Professor Kawakami said.

"Equally interesting is that the insulator was operating like a one-way valve, allowing electron flow in one direction -- from the electrode to graphene -- but not the other."

"The insulator helps to keep the injected spin inside the graphene, which is what leads to high spin injection efficiency."

"This counterintuitive result is the first demonstration of tunnelling spin injection into graphene."

"We now have world record values for spin injection efficiency into graphene."

Professor Kawakami and his team are now planning to demonstrate a working spin logic device.

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Russian Nobels:
Graphene Pioneers Win Nobel Prize
by Simon Magus

Two Russian-born scientists based in Manchester have been awarded the 2010 Nobel Prize for physics.

Andre Geim and Konstantin Novoselov of the University of Manchester conducted experiments with graphene, a form of carbon just one atom thick.

One hundred times stronger than steel, graphene is both the thinnest and toughest material known to science.

It is hoped that graphene could revolutionise practical science in many fields from quantum physics to consumer electronics.

"Since it is practically transparent and a good conductor, graphene is suitable for producing transparent touch screens, light panels and maybe even solar cells," the Nobel committee said.

Geim, a 36-year-old Dutch national, had not expected the prize and would try to carry on as normal.

"My plan for today is to go to work and finish up a paper that I didn't finish this week," he said.

"I just try to muddle on as before."

This is not the first time that Geim has been recognised by his scientific peers.

In 1997, he levitated a frog using a magnetic field.

This resulted in the receipt of a tongue-in-cheek IgNobel award from the Annals of Improbable Research in 2000.

"I think I'm the first person who won both," he said.

"I'm very proud of these prizes."

Mark Miodownik, head of a research unit at King's College London, said the award will please scientists greatly.

"It shows you can still get a Nobel Prize by mucking about in a lab," he said.

Further reading: Through The Eye of a Needle: Graphene Holds Key to Speedy DNA Sequencing

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The Heat is On:
Turning Waste Heat Into Power
by Sir Thomas More

What do a car engine, a power plant, a factory and a solar panel have in common? They all generate heat -- a lot of which is wasted.

Physicists have discovered a new way of harvesting waste heat and turning it into electrical power.

"Thermoelectricity makes it possible to cleanly convert heat directly into electrical energy in a device with no moving parts," said lead author Justin Bergfield, a doctoral candidate at the University of Arizona. College of Optical Sciences.

"Our colleagues in the field tell us they are pretty confident that the devices we have designed on the computer can be built with the characteristics that we see in our simulations."

"We anticipate the thermoelectric voltage using our design to be about 100 times larger than what others have achieved in the lab," added Professor Charles Stafford of the University of Arizona.

The key to the technology lies in a quantum law physicists call wave-particle duality.

Tiny objects such as electrons can behave either as a wave or as a particle.

"In a sense, an electron is like a red sports car," Bergfield said.

"The sports car is both a car and it's red, just as the electron is both a particle and a wave."

"The two are properties of the same thing."

"Electrons are just less obvious to us than sports cars."

"We are the first to harness the wave nature of the electron and develop a concept to turn it into usable energy," Professor Stafford added.

Molecular thermoelectric devices could help solve an issue currently plaguing photovoltaic cells harvesting energy from sunlight.

"Solar panels get very hot and their efficiency goes down," said Stafford.

"You could harvest some of that heat and use it to generate additional electricity while simultaneously cooling the panel and making its own photovoltaic process more efficient."

"With a very efficient thermoelectric device based on our design, you could power about 200 100-Watt light bulbs using the waste heat of an automobile."

"Put another way, one could increase the car's efficiency by well over 25 percent, which would be ideal for a hybrid since it already uses an electrical motor."

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Stub It Out:
Call For Research Into Non-Addictive Cigarettes
by Simon Magus

After a major review of scientific literature, six leading tobacco research and policy experts have concluded that a nicotine reduction strategy should be an urgent research priority.

Reducing the amount of nicotine in cigarettes to non-addictive levels could have a significant public health impact on prevention and smoking cessation.

"Nicotine addiction sustains tobacco use," said Dr Dorothy Hatsukami, director of the University of Minnesota's Tobacco Use Research Centre.

"Quitting tobacco can be as difficult to overcome as heroin or cocaine addiction."

"Reducing the nicotine in cigarettes to a level that is non-addicting could have a profound impact on reducing death and disability related to cigarettes and improving overall public health."

"In addition, studies have shown a significantly lower number of cigarettes are smoked when low-nicotine cigarettes are used, resulting in eventual abstinence in a considerable number of smokers."

Currently about 44 million (or 20 per cent) of adults in the United States smoke cigarettes.

Other research cited by the authors had found that reducing nicotine to non-addictive levels could potentially reduce smoking prevalence to about 5 per cent.

"Imagine a world where the only cigarettes that kids could experiment with would neither create nor sustain addiction," said Dr Mitch Zeller of Pinney Associates.

"The public health impact of this would be enormous if we can prevent youthful experimentation from progressing to regular smoking, addiction, and the resulting premature disease and death later."

"Reducing the nicotine content in cigarettes may be a very effective way to accomplish this major impact."

Image credit: SuperFantastic | CC-BY 2.0

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Let's Stick Together:
Oysters' Ability to Glue Together Revealed
by Simon Magus

Scientists have discovered the chemical components of the adhesive produced by oysters.

Understanding how oysters stick together to form complex reefs could help conservation efforts, yield environmentally friendly 'anti-fouling' agents to keep hulls clean, and even lead to wet-setting adhesives for use in medicine and construction.

"With a description of the oyster cement in hand, we may gain strategies for developing synthetic materials that mimic the shellfish's ability to set and hold in wet environments," said Professor Jonathan Wilker of Purdue University.

"Dentistry and medicine may benefit from such a material."

"For instance, it would be great to have a surgical adhesive that could replace staples and sutures, which puncture healthy tissue and create potential sites for infection."

By comparing oyster shells with the material that connects the animals to each other, the researchers were able to determine its chemical composition.

The results showed that the adhesive had almost five times the amount of protein and more water than what is found in the shell.

"The adhesive material differed significantly in composition from the shell, which indicates that the oyster produces a chemically distinct substance for sticking together," Professor Wilker said.

The oyster adhesive is an inorganic cement-like substance than the organic glue-like material produced by other marine animals such as mussels.

"The oyster cement appears to be harder than the substances mussels and barnacles use for sticking to rocks," said Professor Wilker.

"The adhesives produced by mussels and barnacles are mostly made of proteins, but oyster adhesive is about 90 percent calcium carbonate, or chalk."

"On its own, chalk is not sticky."

"So the key to oyster adhesion may be a unique combination of this hard, inorganic component with the remaining 10 per cent of the material that is protein."

This 10 per cent of oyster cement does bear some similarity to mussel glue in its composition of proteins and the presence of iron.

In earlier studies, Professor Wilker found that iron played a key role in the hardening, or curing, of mussel adhesive.

It may serve a similar purpose in the oyster adhesive.

Finding commonality in the sticky substances produced by marine organisms is key to the development of both synthetic adhesives and treatments to prevent the accumulation of these animals on ships hulls.

Hundreds of different marine species attach themselves to ships, increasing drag, and reducing sailing speeds.

Preventing and controlling their accumulation, called fouling, is a major expense for the world's shipping fleet.

"The current anti-fouling methods rely on toxicity and ship bottoms are often coated with a copper-based paint that kills marine organisms in their larval states," Professor Wilker said.

"If we could figure out a non-toxic a way to defeat the adhesives, we could keep them off ships without harming the environment."

Oysters stick together to reproduce and to protect themselves from predators and large waves.

Theese reefs can stretch for miles and filter large volumes of water, prevent erosion and create a storm wall that strengthens coastlines.

In addition, the reefs create a habitat for hundreds of other species.

"Overfishing, pollution and disease have reduced the oyster population by 98 per cent or more since the late 1800s," said Professor Wilker.

"Many people are now trying to reintroduce the animals to their prior habitats."

"Perhaps our work will add to the understanding of this shellfish and what is needed for oysters and the larger coastal ecosystem to thrive."


Image credit: Anthere | CC BY-SA

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Neanderthal Order:
Neanderthals More Advanced Than Previously Thought
by Simon Magus

Scientists have long believed that Neanderthals developed 'modern' tools and ornaments solely through contact with Homo sapiens.

But new study shows these sturdy ancients could adapt, innovate, and evolve technology on their own.

The findings challenge a half-century of conventional wisdom maintaining that Neanderthals were thick-skulled, primitive 'cavemen'.

"Basically, I am rehabilitating Neanderthals," said Professor Julien Riel-Salvatore of the University of Colorado in Denver.

"They were far more resourceful than we have given them credit for."

Around 42,000 years ago, the Aurignacian culture attributed to modern Homo sapiens appeared in northern Italy.

Central Italy continued to be occupied by Neanderthals of the Mousterian culture which had been around for at least 100,000 years.

At this time a new culture arose in the south, one also thought to be created by Neanderthals.

They were the Uluzzian and they were very different.

Riel-Salvatore identified projectile points, ochre, bone tools, ornaments and possible evidence of fishing and small game hunting at Uluzzian archeological sites throughout southern Italy.

Such innovations are not traditionally associated with Neanderthals, strongly suggesting that they evolved independently, possibly due to dramatic changes in climate.

More importantly, they emerged in an area geographically separated from modern humans.

"My conclusion is that if the Uluzzian is a Neanderthal culture it suggests that contacts with modern humans are not necessary to explain the origin of this new behaviour," Professor Julien Riel-Salvatore said.

"This stands in contrast to the ideas of the past 50 years that Neanderthals had to be acculturated to humans to come up with this technology."

"When we show Neanderthals could innovate on their own it casts them in a new light."

"It 'humanises' them if you will."

The powerfully built Neanderthals were first discovered in Germany's Neander Valley in 1856.

Exactly who they were, how they lived and why they vanished remains unclear.

Research shows they contributed between 1 and 4 percent of their genetic material to the people of Asia and Europe.

Professor Riel-Salvatore rejects the theory that they were exterminated by modern humans.

Homo sapiens might simply have existed in larger groups and had slightly higher birth-rates.

"It is likely that Neanderthals were absorbed by modern humans," said Professor Julien Riel-Salvatore.

"My research suggests that they were a different kind of human, but humans nonetheless."

"We are more brothers than distant cousins."

Image credit: Christoph P.E. Zollikofer

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Leave The Light On:
Artifical Light Boosts Bird Reproduction
by Sir Thomas More

Scientists have shown that permanent night lighting alters the reproductive behaviour of birds.

In those habitats that are affected by artificial light, males started to sing earlier and females advanced the onset of breeding activities.

Moreover, males occupying territories with street lights had a higher number of extra-pair mates than males living in dark forests.

"In comparison to chemical and noise pollution, light pollution is more subtle, and its effects have perhaps not received the attention they deserve," said Bart Kempenaers of the Max Planck Institute for Ornithology in Germany.

"Our findings show clearly that light pollution influences the timing of breeding behaviour, with unknown consequences for bird populations."

Researchers studied the effect of street lighting at the outskirts of forest habitat on the song behaviour of male birds.

Males from four out of five species started to sing earlier in the morning than males that lived in locations without artificial night light.

This effect was most pronounced for those species known to engage in early dawn singing.

For example, male robins living near street lights started singing on average 80 minutes earlier than their counterparts sleeping in the dark.

Over seven consecutive years they monitored breeding activities in a population of blue tits.

Those females that lived near artificial light started egg-laying on average one and a half days earlier than females in areas without street lights or in deep forest habitats.

"Females that start to lay earlier usually produce more eggs. They are often in a better physical condition than those that start laying later in the season", said Kempenaers.

"However, females that advance breeding due to the artificial light do not, overall, lay more eggs"

Artificial night lighting also has a strong effect on the reproductive success of male blue tits.

The scientists found that males living in forest outskirts exposed to street lights were twice as successful in obtaining extra-pair mates than their neighbours in the darker areas within the forest.

This effect was most pronounced in yearling males that are usually not very successful in siring extra-pair offspring.

Under the influence of artificial light, those males sired almost as many extra-pair offspring as older males in dark habitats.

"Most likely early dawn song represents a signal for the females to estimate male quality", said Kempenaers.

"I suspect that the effects on breeding will be very general, and not restricted to birds."

"The effect on extra-pair paternity may be more unique to blue tits or to those species where females use the dawn song as a cue."

"We know too little about this in other birds."

Image credit: NP Holmes / CC BY-SA 3.0

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Looking Inward:
Brain Region Linked to Introspection
by Sir Thomas More

A specific region of the brain appears to be larger in individuals who tend towards introspection.

The volume of grey matter in the anterior prefrontal cortex of the brain, which lies right behind our eyes, is a strong indicator of a person's introspective ability.

Furthermore, the structure of white matter connected to this area is also linked to this process of introspection.

A new study may help scientists understand how certain brain injuries affect an individual's ability to reflect upon their own thoughts and actions.

It may eventually be possible to tailor appropriate treatments to patients, such as stroke victims or those with serious brain trauma, who may not even understand their own conditions.

"Take the example of two patients with mental illness -- one who is aware of their illness and one who is not," said study co-author Stephen Fleming of University College London.

"The first person is likely to take their medication, but the second is less likely."

"If we understand self-awareness at the neurological level, then perhaps we can also adapt treatments and develop training strategies for these patients."

By comparing the MRI scans of each participant's brain, researchers identified a correlation between introspective ability and the structure of a small area of the prefrontal cortex.

An individual's meta-cognitive, or 'hgher-thinking' abilities were significantly correlated with the amount of grey matter in the right anterior prefrontal cortex and the structure of neighbouring white matter.

More research is needed to explore the mental computations behind introspection and then to link these computations to actual biological processes.

"We want to know why we are aware of some mental processes while others proceed in the absence of consciousness," said Fleming.

"There may be different levels of consciousness, ranging from simply having an experience, to reflecting upon that experience."

"Introspection is on the higher end of this spectrum."

"By measuring this process and relating it to the brain we hope to gain insight into the biology of conscious thought."

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Through The Eye of a Needle:
Graphene Holds Key to Speedy DNA Sequencing
by Sir Thomas More

A new study at Harvard has shown that graphene, a sheet of carbon just one-atom thick, can act as an artificial membrane separating two liquid reservoirs.

By drilling a nanopore just a few nanometers wide in the graphene membrane, they demonstrated that a long DNA molecule could be pulled through the nanopore just as a thread is pulled through the eye of a needle.

"By measuring the flow of ions passing through a nanopore drilled in graphene we have demonstrated that the thickness of graphene immersed in liquid is less then 1 nanometer thick, or many times thinner than the very thin membrane which separates a single animal or human cell from its surrounding environment," said lead author Slaven Garaj of the Department of Physics at Harvard University.

"This makes graphene the thinnest membrane able to separate two liquid compartments from each other."

"The thickness of the membrane was determined by its interaction with water molecules and ions."

Graphene's remarkable properties have attracted interest from many researchers.

As well as being the strongest material known to science, it is electrically conductive.

"Although the membrane prevents ions and water from flowing through it, the graphene membrane can attract different ions and other chemicals to its two atomically close surfaces," said co-author Professor Jene Golovchenko of Harvard.

"This affects graphene's electrical conductivity and could be used for chemical sensing,"

"I believe the atomic thickness of the graphene makes it a novel electrical device that will offer new insights into the physics of surface processes and lead to a wide range of practical application, including chemical sensing and detection of single molecules."

Several challenges still remain to be overcome before DNA sequencing with graphene is practical, including controlling the speed with which DNA threads through the nanopore.

When achieved, graphene could lead to very inexpensive and rapid DNA sequencing.

"We were the first to demonstrate DNA translocation through a truly atomically thin membrane," said co-author Professor Daniel Branton of Harvard University.

"The unique thickness of the graphene might bring the dream of truly inexpensive sequencing closer to reality."

"The research to come will be very exciting."

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This Will Not End Well:
Researchers Create Robots With Deceptive Traits
by John Connor

A robot deceives an enemy soldier by creating a false trail and hiding so that it will not be caught.

While this sounds like a scene from a science-fiction movie, it's actually the scenario from the first detailed examination of robot deception by scientists.

"We have developed algorithms that allow a robot to determine whether it should deceive a human or other intelligent machine and we have designed techniques that help the robot select the best deceptive strategy to reduce its chance of being discovered," said Professor Ronald Arkin of the Georgia Tech School of Interactive Computing.

Robots capable of deception may be valuable for several different applications, such as warfare or search and rescue operations.

Battlefield robots with the power of deception will be able to successfully hide and mislead the enemy to keep themselves and valuable information safe.

But a search and rescue robot may need to deceive in order to calm or receive co-operation from a panicking victim.

"Most social robots will probably rarely use deception, but it's still an important tool in the robot's interactive arsenal because robots that recognise the need for deception have advantages in terms of outcome compared to robots that do not recognize the need for deception," said study co-author Alan Wagner, an engineer at the Georgia Tech Research Institute.

While there may be advantages to creating robots with the capacity for deception, the ethical implications are profound and wide-ranging.

"We have been concerned from the very beginning with the ethical implications related to the creation of robots capable of deception and we understand that there are beneficial and deleterious aspects," Professor Arkin said.

"We strongly encourage discussion about the appropriateness of deceptive robots to determine what, if any, regulations or guidelines should constrain the development of these systems."

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Alike It:
Our Immune Systems Are More Alike Than Previously Thought
by Simon Magus

When it comes to the mechanics of the human immune system, we are all more alike than previously thought, according to a new study.

This finding has significant implications for developing new ways to detect, diagnose and treat cancer and diseases of the immune system.

"We found that any two people may share tens of thousands of the exact same T-cell receptor. This is contrary to previous dogma that each person has a distinct set of T-cell receptors with little or no overlap between people," said Dr Harlan Robins, a computational biologist and an assistant member of the Public Health Sciences Division at the Hutchinson Centre.

The findings have diagnostic and therapeutic potential for auto-immune diseases and cancer.

"The strong similarity in the adaptive immune cells between different people suggests that the same disease will induce the same response in different people," Dr Robins said.

"The technology... can readily detect such a response, even if the magnitude of the immune reaction is small."

"Therefore, we potentially could use one or more of these shared T-cell responses as a diagnostic for a particular disease."

For the study, Dr Robins and his colleagues sequenced more than five million T-cell receptor DNA strands from each of seven healthy donors.

After comparing these sequences, they found two primary results.

Firstly, the set of T-cell receptor sequences used by the human immune system is not a random cross section of all the possibilities, but a small subset with consistent properties that the scientists subsequently identified.

"Each person's adaptive immune system is far more alike than expected," said Dr Robins.

Secondly, pair-wise comparisons of the T-cell receptors in the seven donors revealed that that tens of thousands of identical receptors are shared by each pair, even in people of different ethnicities.

"The results of our paper suggest that a specific set of T-cells that we can now detect are likely to play a causative role in the disease," Dr Robins said.

"Further, we can detect this targeted set much earlier than present diagnostics, perhaps saving vital cell function with the preventive administration of currently available therapeutics."

"And because the T-cell clones are causative of the disease, they also double as therapeutic targets."

"In principle, a monoclonal antibody could be developed to target these T-cell clones and prevent the autoimmune attack."

"Effectively, the immune system is an amplifier."

"So a very small tumor has the potential to induce a magnified immune response."

"We are readily able to detect such a response."

"The results of this paper suggest that multiple patients might have a similar response to the same type of tumour."

"Therefore, detection of these similar responses could be an early diagnostic for certain types of cancer."

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Phage Turner:
Macrophages Regulate Immunity & Help Heal Wounds
by Simon Magus

The term 'macrophage' conjures images of a hungry white blood cell gobbling invading bacteria.

But macrophages do much more than that -- not only do they act as antimicrobial warriors, they also play critical roles in immune regulation and wound-healing.

They can respond to a variety of cellular signals and change their physiology in response to local cues.

"There has been a huge outpouring of research about host defense that has overshadowed the many diverse activities that these cells do all the time," said Professor Dr David Mosser of the University of Maryland's College of Chemical and Life Sciences.

"We'd like to dispel the narrow notion that most people have that macrophages' only role is defence, and expand it to include their role in homeostasis."

"It might be possible to manipulate macrophages to make better vaccines, prevent immunosuppression, or develop novel therapeutics that promote anti-inflammatory immune responses."

But certain harmful microbes, such as the tropical parasite Leishmania spp., can exploit wound-healing macrophages, said Dr. Mosser.

"If you have a macrophage whose job it is to promote wound-healing, that macrophage will not be capable of killing microbes," he said.

"The microbe can enter the macrophage and survive inside, which is not good for the human host."

Understanding how Leishmania exploits macrophages has led to a better understanding of how macrophages function in health and disease.

It has also stressed the importance of treating infections early, before the bugs can wreak havoc on the immune system.

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Funny Peculiar:
Laughter Plays Key Role in Group Dynamics
by Sir Thomas More

Laughter can play a key role in group communication and dynamics -- even when there's nothing funny going on.

That's according to a new study that examined the role of laughter in jury deliberations during a capital murder case.

Researchers were given access to the full transcript of jury deliberations in the 2004 Ohio trial of Mark Ducic, a white male charged with two murders and 30 additional counts, largely related to drug violations.

"This was a rare opportunity to gain insight into the jury's deliberative process," said Professor Dr Joann Keyton of North Carolina State University and co-author of the study.

"As far as we know, this is the only jury transcript available for study from a death penalty case."

Keyton and her co-author, Dr Stephenson Beck of North Dakota State University, were struck by the amount of laughter.

"This was intriguing," Professor Keyton said.

"We're interested in how people communicate within a group in order to accomplish a task, and we saw this as an opportunity to explore the role of laughter in how people signal support -- or lack of support -- for other people's positions within a group."

Keyton noted that there is very little research on the role of laughter in communication, particularly when divorced from humour.

The researchers learned that laughter could be used as a tool, intentionally and strategically, to control communication and affect group dynamics.

For example, one juror was very vocal and made it clear early in the case that she was opposed to the death penalty.

In one instance, when that juror agreed with other jury members, one of the other members said 'She's so smart,' resulting in laughter from other members of the group.

"That had the effect of further distancing her from the rest of the jury," Keyton said.

"When juries form, they don't know each other."

"So part of the jury process is to create relationships within the group -- for example, figuring out who thinks like me, who will have the same position I have."

"There are power dynamics at play."

"Laughter matters, even when it is a serious group task."

"Laughter is natural, but we try to suppress it in formal settings."

"So, when it happens, it's worth closer examination."

At one point, the jury was unclear on whether a sentence related to one of the charges was for 30 days or 30 years.

This confusion led to widespread laughter.

"The laughter allowed the jurors to release some tension, while also allowing them to acknowledge they had made an error -- so they could move forward with that error corrected," Keyton said.

"Laughter is one way of dealing with ambiguity and tension in situations where a group is attempting to make consequential decisions and informal power dynamics are in play."

"There are very few opportunities to see group decision making, with major consequences, in a public setting."

"It is usually done in private, such as in corporate board meetings or judicial proceedings."

"But laughter is something that occurs frequently, and not only because something is funny."

"Nobody in the jury was laughing at jokes."

Image credit: David Shankbone / CC A-SA 3.0

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Prescription for Addiction:
Many Opioid Addicts Got Hooked by Prescribed Drugs
by Simon Magus

When scientists wanted to find out how people became addicted to opioids and why they kept using, they asked addicts directly.

Thirty-one of 75 patients hospitalised for opioid detoxification told researchers that they first got hooked on drugs legitimately prescribed for pain.

"We are seeing an increase in the number of patients addicted to prescription drugs, so we wanted to better understand how they first got hooked," said Professor Richard Blondell of the University of Buffalo and senior author on the study.

"This information suggests that there is a progressive nature to opioid use, and that prescription opioids can be the gateway to illicit drug addiction."

"It also tells us that people who use prescriptions illegally may be at greater risk for subsequent heroin use than those who use prescriptions legally."

Slightly more than half of the study group -- 51 per cent -- said they first used the drugs for post-surgical pain, back pain or after an injury.

49 percent said that they were curious and/or someone they were with had the drugs.

Those who became addicted from using drugs legally prescribed for pain were more likely to be older, female, have a university degree, and more likely to take their drugs orally, rather than nasally or via injection.

Users' comments on how they got started using drugs other than for pain, and why they continued, were revealing.

'Pill parties' were a common starting point.

One person said the drug 'was handed to me by my friend, this guy I know, someone who was at the party.'

Another patient said young people are using it "like Viagra.'

When asked if any doctor had ever asked about a substance use problem before writing a prescription, of the 53 participants who answered the question, 74 per cent said no.

Professor Blondell emphasised that the prescribing physician is in the best position to prevent or address addiction in their patients.

"I tell patients that addiction can be an unintended side-effect that occurs occasionally with the use of these medications," he said.

"Doctors need to be able to help them if this occurs, so doctors will need to monitor the use of these medications closely."

"I also tell patients to discard unused medication ASAP to prevent addiction in themselves and those, such as teenage family members, who might get their hands on these leftover pills."

Image credit: Bill Barber / CC BY-NC 2.0

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Sweet:
Moderate Chocolate Consumption Linked to Lower Risks of Heart Failure
by Simon Magus

chocolate.jpgA new study shows that middle-aged and elderly Swedish women who regularly ate a small amount of chocolate had lower risks of heart failure risks.

Women who ate an average of one to two servings of high cocoa chocolate per week had a 32 per cent lower risk of developing heart failure.

"You can’t ignore that chocolate is a relatively calorie-dense food and large amounts of habitual consumption is going to raise your risks for weight gain," said lead researcher Dr Murrray Mittleman, director of the Cardiovascular Epidemiology Research Unit at Harvard Medical School’s Beth Israel Deaconess Medical Center in Boston.

"But if you’re going to have a treat, dark chocolate is probably a good choice, as long as it’s in moderation."

High concentration of compounds called 'flavonoids' in chocolate may lower blood pressure, among other benefits, according to mostly short-term studies.

But this is the first study to show long-term outcomes related specifically to heart failure, which can result from ongoing untreated high blood pressure.

Dr Mittleman said differences in chocolate quality affect the study’s implications for Americans.

Higher cocoa content is associated with greater heart benefits.

In Sweden, even milk chocolate has a higher cocoa concentration than dark chocolate sold in the United States.

Also, the average serving size for Swedish women in the study ranged from 19 grams among those 62 and older, to 30 grams among those 61 and younger.

In contrast, the standard American portion size is 20 grams.

"Those tempted to use these data as their rationale for eating large amounts of chocolate or engaging in more frequent chocolate consumption are not interpreting this study appropriately," said Professor Dr Linda Van Horn of Northwestern University’s Feinberg School of Medicine in Chicago.

"This is not an ‘eat all you want’ take-home message, rather it’s that eating a little dark chocolate can be healthful, as long as other adverse behaviours do not occur, such as weight gain or excessive intake of non-nutrient dense ‘empty’ calories."

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SANE in the Membrane:
Low-Cost Nanopatterning Using Shrinky Dinks
by Sir Thomas More

Shrinky Dinks -- an arts and crafts material used by children since the 1970s -- are being used by scientist researching ways to fabricate nanomaterials.

The flexible plastic sheets have inspired a new inexpensive way to create, test and mass-produce large-area patterns on the nanoscale.

"Anyone needing access to large-area nanoscale patterns on the cheap could benefit from this method," said Professor Teri W. Odom of the Weinberg College of Arts and Sciences.

"It is a simple, low-cost and high-throughput nanopatterning method that can be done in any laboratory."

Shrinky Dinks are large flexible sheets which are heated in an oven.

When exposed to heat, they shrink to small hard plates without altering their colour or shape.

The new technique utilises this property to manipulate the electronic, photonic and magnetic properties of nanomaterials.

It also easily controls a pattern's size and symmetry and can be used to produce millions of copies of the pattern over a large area.

Potential applications include devices that take advantage of nanoscale patterns, such as solar cells, high-density displays, computers, and chemical and biological sensors.

Solvent-assisted nanoscale embossing (SANE) can increase the spacing of patterns up to 100 per cent as well as decrease them down to 50 per cent in a single step, merely by stretching or heating (shrinking) the polymer substrate (the Shrinky Dinks material).

Also, SANE can reduce critical feature sizes as small as 45 per cent compared to the master by controlled swelling of patterned polymer moulds with different solvents.

SANE works from the nanoscale to the macroscale.

"No other existing nanopatterning method can both prototype arbitrary patterns with small separations and reproduce them over six-inch wafers for less than US$100," Professor Odom said.

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This Old House:
Stone Age Remains Uncover Britain's Earliest House
by Simon Magus

Archaeologists excavating Stone Age remains at a site in North Yorkshire believe that it contains Britain's earliest surviving house.

The team from the Universities of Manchester and York say that the home dates to at least 8,500 BC -- when Britain was still attached to the continental European landmass.

The team unearthed the 3.5 metre circular structure next to an ancient lake at Star Carr, near Scarborough.

They are currently excavating a large wooden platform next to the lake, made of timbers which have been split and hewn.

This platform is the earliest known evidence of carpentry in Europe.

The house itself predates what was previously Britain's oldest known dwelling at Howick, Northumberland, by at least 500 years.

The wooden dwelling at Star Carr, which was first excavated by the team two years ago, had post holes around a central hollow which would have been filled with organic matter such as reeds, and possibly a fireplace.

"This exciting discovery marries world-class research with the lives of our ancestors," said David Willetts, Universities and Science Minister.

"It brings out the similarities and differences between modern life and the ancient past in a fascinating way, and will change our perceptions for ever."

"I congratulate the research team and look forward to their future discoveries."

The site was inhabited by hunter gatherers from just after the last ice age, for a period of between 200 and 500 years.

They would have migrated from an area now under the North Sea, hunting animals including deer, wild boar, elk and enormous wild cattle known as auroch.

Though they did not cultivate the land, the inhabitants did burn part of the landscape to encourage animals to eat shoots and they also kept domesticated dogs.

"This is a sensational discovery and tells us so much about the people who lived at this time," said Dr Nicky Milner of the University of York.

"From this excavation, we gain a vivid picture of how these people lived."

"For example, it looks like the house may have been rebuilt at various stages."

"It is also likely there was more than one house and lots of people lived here."

"The platform is made of hewn and split timbers -- the earliest evidence of this type of carpentry in Europe."

"And the artefacts of antler, particularly the antler head-dresses, are intriguing as they suggest ritual activities."

The discoveries mean we could have to re-think our assumptions about how people lived in the Stone Age.

"This changes our ideas of the lives of the first settlers to move back into Britain after the end of the last Ice Age," said Dr Chantal Conneller of the University of Manchester.

"We used to think they moved around a lot and left little evidence."

"Now we know they built large structures and were very attached to particular places in the landscape."

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The Beauty Myth:
Attractive Women Face Prejudice in Certain Jobs
by Simon Magus

A new study has found that attractive women are discriminated against when applying for jobs considered 'masculine' and for which appearance is not seen as important.

These positions include manager of research and development, director of finance, mechanical engineer and construction supervisor.

"In these professions being attractive was highly detrimental to women," said Professor Stefanie Johnson of the University of Colorado Denver Business School.

"In every other kind of job, attractive women were preferred. This wasn't the case with men which shows that there is still a double standard when it comes to gender."

According to Johnson, beautiful people still enjoy significant benefits on the whole.

They tend to get higher salaries, better performance evaluations, higher levels of admission to college, better voter ratings when running for public office, and more favourable judgements in trials.

But in certain niches, beauty can be a hindrance -- something researchers have called the 'beauty is beastly' effect.

"In two studies, we found that attractiveness is beneficial for men and women applying for most jobs, in terms of ratings of employment suitability," according to the study.

"However, attractiveness was more beneficial for women applying for feminine sex-typed jobs than masculine sex-typed jobs."

In one experiment, participants were given a list of jobs and photos of applicants and told to sort them according to their suitability for the job.

They had a stack of 55 male and 55 female photos.

In job categories such as director of security, hardware salesperson, prison guard and tow truck driver, attractive women were overlooked.

Attractive women tended to be sorted into positions like receptionist or secretary.

"One could argue that, under certain conditions, physical appearance may be a legitimate basis for hiring," Professor Johnson said.

"In jobs involving face-to-face client contact, such as sales, more physically attractive applicants could conceivably perform better than those who are less attractive."

"However it is important that if physical attractiveness is weighed equally for men and women to avoid discrimination against women."

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Human See, Human Do:
People Imitate Voices Even When They Can't Hear Them
by Sir Thomas More

Humans are constant imitators. We unintentionally mirror subtle aspects of each other’s mannerisms, postures and facial expressions.

We also imitate other people's speech patterns, including inflections, talking speed and speaking style -- even foreign accents of people we talk to.

A new study shows that unintentional speech imitation can even make us sound like people whose voices we never hear.

Researchers at the University of California, Riverside, asked hearing individuals with no formal lip-reading experience to watch a silent face articulate 80 simple words.

Those individuals were asked to identify the words by saying them out loud clearly and quickly.

To make the lip-reading task easier, the test subjects were given a choice of two possible words.

They were never asked to imitate or repeat the talker.

Researchers discovered that words spoken by the test subjects sounded more like the words of the talker they lip-read than words spoken when read from a list.

That finding provided compelling evidence that unintentional speech imitation extends to lip-reading, even for normal hearing individuals with no formal lip-reading experience.

"Whether we are hearing or lipreading speech articulations, a talker’s speaking style has subtle influences on our own manner of speaking," said Professor Lawrence D. Rosenblum of the University of California, Riverside.

"This unintentional imitation could serve as a social glue, helping us to affiliate and empathize with each other."

"But it also might reflect deep aspects of the language function."

"Specifically, it adds to evidence that the speech brain is sensitive to -- and primed by -- speech articulation, whether heard or seen."

"It also adds to the evidence that a familiar talker’s speaking style can help us recognise words."

Image credit: Bekah Healey / CC BY-NC-ND 3.0

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Leftovers:
Ancient Viral DNA Found in Human Genome
by Simon Magus

Retroviruses are known to insert their genetic material into the host genome as part of their replication.

Scientists have previously found genetic material from retroviruses in vertebrate genomes.

Now a team of researchers have now discovered that human and other vertebrate genomes also contain many ancient sequences from Ebola/Marburgviruses and Bornaviruses -- two deadly virus families.

As neither virus family is known to insert its genetic material into the host genome during replication, the discovery was all the more unexpected.

"This was a surprise for us," said Dr Anna Marie Skalka of the Fox Chase Cancer Center in Philadelphia.

"It says that the source of our genetic material is considerably wider than we thought."

"It includes our own genes and unexpected viral genes as well."

Researchers compared 5,666 viral genes from all known non-retroviral families with single-stranded RNA genomes to the genomes of 48 vertebrate species, including humans.

In doing so, they uncovered 80 separate viral sequence integrations into 19 different vertebrate species.

Interestingly, nearly all of the viral sequences come from ancient relatives of just two viral families, the Ebola/Marburgviruses and Bornaviruses, both of which cause haemorrhagic fevers and neurological disease.

"These viruses are RNA viruses," Dr Skalka said.

"They replicate their RNA and are not known to make any DNA."

"And they have no known mechanism for getting their genetic material integrated into the DNA of the host genome."

"Indeed, some of them don't even enter the nucleus when they replicate."

That the sequences, some of which may have been integrated into the genomes more than 40 million years ago, have been largely conserved over evolutionary time suggests that they give the host a selective advantage -- perhaps protecting them from future viral infection.

"In a way, one might even think of these integrations as genomic vaccinations," said Dr Skalka.

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Mine, All Mine:
New Breakthrough in Data Mining
by Sir Thomas More

When you deal with companies, you aren't just a customer, but you're also a mass of information with many 'dimensions' within a computer database.

Researchers have devised a new method for simpler, faster 'data mining' -- a way to simply extract and analyse massive amounts of this data.

"Whether you like it or not, Google, Facebook, Walmart and the government are building profiles of you, and these consist of hundreds of attributes describing you," said Professor Suresh Venkatasubramanian of the University of Utah.

"If you line them up for each person, you have a line of hundreds of numbers that paint a picture of a person -- who they are, what their interests are, who their friends are and so forth."

"These strings of hundreds of attributes are called high-dimensional data because each attribute is called one dimension."

"Data mining is about digging up interesting information from this high-dimensional data."

A group of data-mining methods dubbed 'multidimensional scaling' (MDS) first developed in the 1930s has been used ever since to make data analysis simpler by reducing the dimensionality of the data.

Professor Venkatasubramanian described MDS as 'probably one of the most important tools in data mining and is used by countless researchers everywhere.'

But Professor Venkatasubramanian and colleagues have now devised a new method of multidimensional scaling that is faster, simpler, can be used for a wider range of problems and can handle more data.

"Data mining means finding patterns, relationships and correlations in high-dimensional data," Professor Venkatasubramanian said.

"You literally are digging through the data to find little veins of information."

"The challenge of data mining is dealing with the dimensionality of the data and the volume of it."

"So one expression common in the data mining community is 'the curse of dimensionality.'"

"The curse of dimensionality is the observed phenomenon that as you throw in more attributes to describe individuals, the data mining tasks you wish to perform become exponentially more difficult."

"We are now at the point where the dimensionality and size of the data is a big problem."

"It makes things computationally very difficult to find these patterns we want to find."

The new method can handle large amounts of data because 'rather than trying to analyse the entire set of data as a whole, we analyze it incrementally, sort of person by person," said Professor Venkatasubramanian.

That speeds up data mining 'because you don't need to have all the data in front of you before you start reducing its dimensionality.'

Professor Venkatasubramanian acknowledged that there are privacy concerns around data mining, but also highlighted the potential benefits to consumers.

"The issue of privacy in data mining is like any set of potentially negative consequences of scientific advances," he said.

"If you target advertising based on what people need, it becomes useful."

"The better the advertising gets, the more it becomes useful information and not advertising."

"And the way we are being inundated with all forms of information in today's world, whether we like it or not we have no choice but to allow machines and automated systems to sift through all this to make sense of the deluge of information passing our eyes every day."

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Spaceballs:
Buckyballs Found in Space
by Simon Magus

Astronomers have used Nasa's Spitzer Space Telescope to discover carbon molecules, known as buckyballs, floating in space for the first time.

Buckyballs were previously thought to float through space, but they had evaded detection until now.

"We found what are now the largest molecules known to exist in space," said astronomer Jan Cami of the University of Western Ontario.

"We are particularly excited because they have unique properties that make them important players for all sorts of physical and chemical processes going on in space."

Buckyballs are molecules made from 60 carbon atoms arranged in a three-dimensional sphere.

Their alternating patterns of hexagons and pentagons are similar to the geodesic domes popularised by Buckminster Fuller -- hench buckyballs, more formally known as buckminsterfullerene.

The Cami team unexpectedly found the carbon balls while observing a planetary nebula named Tc 1.

The buckyballs were found in the clouds surrounding the white dwarf star at the heart of the nebule -- perhaps reflecting a short stage in the star's life, when it sloughs off a burst of material rich in carbon.

"We did not plan for this discovery," Cami said.

"But when we saw these whopping spectral signatures, we knew immediately that we were looking at one of the most sought-after molecules."

Sir Harry Kroto, Nobel prize winning co-discoverer of buckyballs, said: "This most exciting breakthrough provides convincing evidence that the buckyball has, as I long suspected, existed since time immemorial in the dark recesses of our galaxy."

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Bless You:
Universal Flu Vaccine is Coming
by Simon Magus

A universal influenza vaccine -- so-called because it could potentially provide protection from all flu strains for decades -- could become available as a result of research by scientists from the National Institute of Allergy and Infectious Diseases (NIAID).

Current flu vaccines do not generate such broadly neutralising antibodies -- which is why they must be re-formulated each year to match the predominant virus strains in circulation.

"Generating broadly neutralising antibodies to multiple strains of influenza in animals through vaccination is an important milestone in the quest for a universal influenza vaccine," said Dr Anthony S. Fauci, NIAID director.

"This significant advance lays the groundwork for the development of a vaccine to provide long-lasting protection against any strain of influenza."

"A durable and effective universal influenza vaccine would have enormous ramifications for the control of influenza, a disease that claims an estimated 250,000 to 500,000 lives annually, including an average of 36,000 in the United States."

Dr Gary J. Nabel of NIAID and his colleagues first primed mice, ferret and monkey immune systems with a vaccine made from DNA encoding the influenza virus hemagglutinin (HA) surface protein.

After being primed with the DNA vaccine, the mice and ferrets received a booster dose of the 2006-2007 seasonal influenza vaccine or a vaccine made from a weakened cold adenovirus containing HA flu protein.

Monkeys were boosted with the seasonal flu vaccine only.

The prime-boost vaccine stimulated an immune response to the stem of the lollipop-shaped hemagglutinin of influenza virus.

Unlike HA's head -- which mutates readily, allowing the virus to become unrecognisable to antibodies -- the stem varies relatively little from strain to strain.

In principle, antibodies generated against the stem of HA should be able to recognise and neutralise multiple flu strains.

"We are excited by these results," said Dr Nabel.

"The prime-boost approach opens a new door to vaccinations for influenza that would be similar to vaccination against such diseases as hepatitis, where we vaccinate early in life and then boost immunity through occasional, additional inoculations in adulthood."

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The Little Fish That Could:
Small Fish Thrives in Hostile Environment
by Sir Thomas More

Jellyfish thrived the oceans off the coast of southwest Africa when the sardine population collapsed.

Now another small fish is living in the oxygen-depleted dead zone and feasting upon the ecologically dead-end jellyfish.

"Originally there were sardines in the area but over fishing caused the sardine population to collapse in the 1960s and 1970s," said Professor Victoria A. Braithwaite of Penn State University.

"The sardines never recovered and jellyfish became a huge and serious problem, eating what the sardines had eaten."

Jellyfish are considered a dead-end food source as they eat lots of small fish and other sea creatures -- but they have few predators.

However the bearded goby, Sufflogobius bibarbatus, a 4-to-6-inch long, 1.5 inch-wide fish, eats jellyfish.

Larger fish, sea mammals, and sea birds eat gobies -- putting jellyfish back into the food cycle.

"We don't know if they are eating dead jellyfish from the bottom, or if they are coming up to oxygen-filled layers to eat jellyfish, but they are eating jellyfish," Professor Braithwaite said.

Stranger still is the gobies' use of the dead zone in the area.

One reason there were so many sardines and now jellyfish is a large area of up-welling water off the southwest coast of Africa from Namibia to South Africa.

This deep cold water contains large amounts of nutrients.

When plankton eat the nutrients, their populations increase massively.

Excess nutrients and dead plankton then fall to the ocean floor.

"A horrible toxic sludge forms, and very few things can live in it except for some bacteria and nematodes," said Professor Braithwaite.

"Somehow the gobies can withstand the toxic environment, but we don't know exactly how they are doing it."

Gobies can cope without oxygen for hours at a time while they rest on the muddy seabed -- but remain alert.

"When we touch them with a rod, they show rapid escape responses," said Braithwaite.

For the goby, the toxic mud is a perfect hiding place as no predators are willing to enter that environment.

"It is a win-win situation where the gobies are using a resource that is usually a dead end in the ocean, the jellyfish," Professor Braithwaite said.

"And they are using the toxic mud as a refuge."

"Together this seems to explain why their population is growing despite the fact that they are now being the main prey species in this unusual ecosystem."

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Hope From Dope:
Cannabis Derivative Could Relieve Pain Without Euphoria
by Sir Thomas More

cannabisplant.jpgA new compound derived from cannabis might provide effective pain relief without the mental and physical side effects of cannabis.

The synthetic cannabinoid called MDA19 seems to avoid side effects by targeting one specific subtype of the cannabinoid receptor.

"MDA19 has the potential for alleviating neuropathic pain without producing adverse effects in the central nervous system," said Dr Mohamed Naguib of The University of Texas.

Dr. Naguib investigated cannabinoid receptors to develop new drugs that could treat neuropathic pain.

Neuropathic pain is caused by nerve damage and is common in patients with trauma, diabetes, and other conditions.

Current treatments are generally ineffective.

Rats treated with MDA19 experienced reduced neuropathic pain, with greater effects at higher doses.

At the same time, it did not seem to cause any of the behavioural effects associated with cannabis.

"With functionally selective drugs, it would be possible to separate the desired from the undesired effects of a single molecule through a single receptor," Dr Naguib said.

More research will be needed before MDA19 is ready for testing in humans.

"These elegant studies by Professor Naguib demonstrate remarkable analgesic properties for this synthetic cannabinoid," said Dr Steven L. Shafer of Columbia University.

"Although preliminary, these studies suggest that synthetic cannabinoids may be a significant step forward for patients suffering from neuropathic pain."

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To Make An Omelette:
Cracking the Secret of Egg Shell Formation
by Siimon Magus

Researchers have applied computing power to crack a problem in egg shell formation.

The study may also give a partial answer to the age old question: “What came first the chicken or the egg?”

The answer to the question in this context is a particular chicken protein.

But there is a further twist as this particular chicken protein turns out to come both first and last.

That neat trick it performs provides new insights into control of crystal growth which is key to eggshell production.

Researchers used a powerful computing technique called metadynamics in conjunction with the UK National Supercomputer in Edinburgh to crack this egg problem.

"Metadynamics extends conventional molecular dynamics (MD) simulations and is particularly good at sampling transitions between disordered and ordered states of matter," said Dr David Quigley of the Department of Physics and Centre for Scientific Computing at the University of Warwick.

Dr Quigley and his colleagues created simulations that showed exactly how the protein bound to amorphous calcium carbonate surface using two clusters of arginine residues, located on two loops of the protein and creating a chemical 'clamp' to nanoparticles of calcium carbonate.

While clamped in this way, the OC-17 encourages the nanoparticles of calcium carbonate to transform into calcite crystallites that form the tiny of nucleus of crystals that can continue to grow on their own.

But they also noticed that this chemical clamp didn’t always work.

The OC-17 just seemed to detach or 'desorbe' from the nanoparticle.

"With the larger nanoparticles we examined we found that the binding sites for this chemical clamp were the same as the smaller nanoparticles but the binding was much weaker," said Professor Mark Rodger of the Department of Chemistry and Centre for Scientific Computing at the University of Warwick.

"In the simulations we performed, the protein never desorbed from the smaller nanoparticle, but always fell off or desorbed from the larger one."

"However in each case, desorption occurred at or after nucleation of calcite."

This elegant process allowing highly efficient recycling of the OC-17 protein.

Effectively it acts as a catalyst, clamping on to calcium carbonate particles to kick-start crystal formation and then dropping off when the crystal nucleus is sufficiently large to grow under its own steam.

This frees up the OC-17 to promote more yet more crystallisation, facilitating the overnight creation of an eggshell.

It is hoped that this new insight will be of great benefit to anyone exploring how to promote and control artificial forms of crystallisation.

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Adaptation:
Tibetans Adapted to High Altitudes Within 3,000 Years
by Sir Thomas More

Tibetans have mutations in numerous genes related to how the body uses oxygen -- which are invaluable to the high altitude dwellers.

A new genetic analysis has revealed that the ethnic Tibetan population split off from the Han Chinese less than 3,000 years ago and rapidly evolved a unique ability to thrive in a low oxygen environment.

"This is the fastest genetic change ever observed in humans," said study leader Professor Rasmus Nielsen of UC Berkeley.

"For such a very strong change, a lot of people would have had to die simply due to the fact that they had the wrong version of a gene."

The mutation found in Tibetans is near a gene called EPAS which codes for a protein involved in sensing oxygen levels and perhaps balancing aerobic and anaerobic metabolism.

Professor Nielsen used computational methods to mine genomic information and discover genetic changes driven by natural selection as humans and animals have adapted to new environments.

Changes in the frequency of DNA mutations proved to be critical.

"You look for rapid evolution in genes because there must be something important about that gene forcing it to change so fast," Professor Nielsen said.

"The new finding is really the first time evolutionary information alone has helped us pinpoint an important function of a gene in humans."

As a result of the mutation, Tibetans have none of the problems facing other ethnicities living at high altitudes -- despite lower oxygen saturation in the blood and lower haemoglobin levels.

Professor Nielsen used genome data produced by the Beijing Genomics Institute to determine the genetic changes associated with these physiological changes.

"We're looking for footprints of past selection to find something functional in our genome," said Professor Nielsen.

The analysis revealed that the common ancestors of Tibetans and Han Chinese split into two populations about 2,750 years ago, with the larger group moving to the Tibetan plateau.

That group eventually shrank, while the low-elevation Han population expanded dramatically.

Today, the Han Chinese are the dominant ethnic group in mainland China.

The Tibetan branch either merged with the people's already occupying the Tibetan plateau, or replaced them.

"We can't distinguish intermixing and replacement," Professor Nielsen said.

"The Han Chinese and Tibetans are as different from one another as if the Han completely replaced the Tibetans about 3,000 years ago."

Although Tibetan and Han Chinese genomes are essentially identical, some 30 genes stood out because of dramatic differences between the Tibetans and the Han.

"We made a list of the genes that changed the most," said Professor Nielsen, "and what was fascinating was that, bing!, at the top of that list was a gene that had changed very strongly, and it was related to the response to oxygen."

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Birdbrained:
Humans & Chickens Share Brain Structure
by Simon Magus

Neuroscientists have traditionally believed that the brains of humans and other mammals differ from the brains of other animals, such as birds.

This so-called received wisdom has prevailed for over a century -- but a new study conducted at the University of California in San Diego (UCSD) shows that a region in the brain of a chicken concerned with analysing auditory input is similar to that of a comparable region in mammals.

"And so ends, perhaps, this claim of mammalian uniqueness," said Professor Dr Harvey J. Karten of UCSD's School of Medicine, lead author of the study.

Mammalian brains were presumed to be more highly evolved and developed than the brains of other animals, in part based upon the distinctive structure of the forebrain and neocortex.

The mammalian neocortex features layers of cells (lamination) connected by radially arrayed columns of other cells.

Early studies of nonmammalian brains had found no similar arrangement, leading to the assumption that neocortical cells and circuits in mammals were unique.

"The belief that cortical micro-circuitry was a unique property of mammalian brains was largely based on the lack of apparent lamination in other species, and the widespread notion that non-mammalian vertebrates were not capable of performing complex cognitive and analytic processing of sensory information like that associated with the neocortex of mammals," Professor Karten said.

"Animals like birds were viewed as lovely automata capable only of stereotyped activity."

But this view created a serious problem for neurobiologists trying to figure out the evolutionary origins of the mammalian cortex -- where did all of that complex circuitry come from and when did it first evolve?

Professor Karten now believes that the answer lies with a common ancestor to both mammals and birds dating back at least 300 million years.

The similarity between mammalian and avian cortices points towards birds as suitable animal models in diverse brain studies.

"Studies indicate that the computational microcircuits underlying complex behaviours are common to many vertebrates," said Professor Karten.

"This work supports the growing recognition of the stability of circuits during evolution and the role of the genome in producing stable patterns."

"The question may now shift from the origins of the mammalian cortex to asking about the changes that occur in the final patterning of the cortex during development."

Image credit: John Went / CC BY-SA 2.0

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The Measure of a Man:
Quantifying Human Behaviour Using Motion Capture
by Sir Thomas More

An unusual partnership between artists and engineers has led to an intensive study of human behaviour using motion capture technology.

Motion capture is commonly used in the film industry to digitise human movement to create computer-generated imagery.

But researchers believe their work could have many diverse applications.

"The Holy Grail is to be able to build technologies to mimic aspects of human behaviour," said principal investigator Professor Shri Narayanan of the University of Southern California.

It is hoped that the study could lead to the development of technologies to help autistic children, create advanced methods for recognising human speech and visual behaviour, and even quantify humour.

"The applications are limitless given the fundamental nature of the issue we’re addressing -- understanding human behaviour,” said co-investigator Professor Sharon Carnicke.

Drawing upon acting students, Narayanan and Carnicke captured hundreds of motion sequences for analysis and created a database they call the USC CreativeIT Database.

"It’s human data," Professor Narayanan said.

"What can we predict from these measurements?"

"Can we develop a mathematical way of explaining patterns in human behaviour?”

“But ultimately what matters are not the new insights they lead to about human behaviour -- but those that can be translated into useful applications."

"These are ongoing research challenges."

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Test the Best:
Investigating the Best Theory of Nature
by Simon Magus

The best theory for explaining the subatomic world was developed in when theorist Paul Dirac combined quantum mechanics with special relativity to explain the behaviour of the electron.

Dirac's work resulted in relativistic quantum mechanics, which became a major ingredient in quantum field theory, and was later integrated into the Standard Model of particles and forces.

Researchers have now conducted a 'table-top experiment' to investigate the theory at a fraction of the cost of previous studies.

"Even so, it should be remembered that the Standard Model is not a final theory of all phenomena, and is therefore inherently incomplete," said Professor Dmitry Budker of the University of California at Berkeley.

Professor Budker and his colleagues conducted the most rigourous trials yet of a fundamental assumption about how particles behave at the atomic scale.

"We tested one of the major theoretical pillars of quantum field theory, the spin-statistics theorem," said lead investigator Dr Damon English of the University of California at Berkeley.

"Essentially we were asking, are photons really perfect bosons?"

The spin-statistics theorem dictates that all fundamental particles must be classified into one of two types, fermions or bosons.

No two electrons can be in the same quantum state -- but any number of bosons can occupy the same quantum state.

The way to tell them apart is by their spin -– not the classical spin of a whirling top but intrinsic angular momentum, a quantum concept.

"There's a mathematical proof of the spin-statistics theorem, but it's so abstruse you have to be a professional quantum field theorist to understand it," said Professor Budker.

"Every attempt to find a simple explanation has failed, even by scientists as distinguished as Richard Feynman."

"The proof itself is based on assumptions, some explicit, some subtle."

"That's why experimental tests are essential."

The researchers set out to test the theorem by using laser beams to excite the electrons in barium atoms.

For experimenters, barium atoms have particularly convenient two-photon transitions, in which two photons are absorbed simultaneously and together contribute to lifting an atom's electrons to a higher energy state.

"Two-photon transitions aren't rare, but what makes them different from single-photon transitions is that there can be two possible paths to the final excited state -– two paths that differ by the order in which the photons are absorbed during the transition," Dr English said.

"These paths can interfere, destructively or constructively."

"One of the factors that determines whether the interference is constructive or destructive is whether photons are bosons or fermions."

Professor Budker described the studay as 'a true table-top experiment, able to make significant discoveries in particle physics without spending billions of dollars.'

"We keep looking, because experimental tests at ever increasing sensitivity are motivated by the fundamental importance of quantum statistics," he said.

"The spin-statistics connection is one of the most basic assumptions in our understanding of the fundamental laws of nature."

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Bushwhacked:
Illegal Bushmeat Trade Booming in Europe
by Sir Thomas More

A new study shows than five tonnes of illegal bushmeat is being smuggled in personal luggage each week through one of Europe's busiest airports.

Researchers worked with customs officers at France's Roissy-Charles de Gaulle airport to identify eleven bushmeat species from confiscated luggage, including species of primate, crocodiles and pangolins.

"Our results estimate that around 270 tonnes of potentially contaminated illegal bushmeat is passing unchecked through a single European airport per year, posing a huge potential risk to public health," says lead author Dr Anne-Lise Chaber of the Zoological Society of London (ZSL).

The Central African Republic, Cameroon and the Democratic Republic of Congo were identified as the main sources of bushmeat.

"Our results show that this is a lucrative, organised trade feeding into a luxury market; a 4kg monkey will cost around €100 in France, compared with just €5 in Cameroon," said co-author Dr Marcus Rowcliffe of ZSL.

"Importing bushmeat is relatively easy as customs officials are given no financial incentives to uncover illegal meat imports, compared with the bonuses they're awarded for drug and counterfeit seizures."

"Also, penalties are very low for people caught carrying illegal meat."

The illegal trade of such large quantities of bushmeat also raises serious questions about the importation of pathogens into Europe.

"Surveillance methods need to be more robust and deterrents more severe if we're to have any chance of halting this illegal trade," said co-author Dr Andrew Cunningham of ZSL.

Image credit: http://www.flickr.com/photos/http2007/ / CC BY-SA 2.0

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Play On:
Ballads Make Women More Open to Dating
by Simon Magus

French researchers have offered hope to average-looking men wanting to ask women out on dates.

They have shown that playing romantic ballads as background music makes women more likely to give their number out.

"Our results confirm that the effect of exposure to media content is not limited to violence and could have the potential to influence a high spectrum of behaviour," said Nicolas Guéguen of the Université de Bretagne-Sud.

Guéguen and Céline Jacob from the Université de Bretagne-Sud collaborated with Lubomir Lamy from Université de Paris-Sud on the study published in the journal Psychology of Music.

87 females each spent five minutes in a waiting room where one of two carefully-selected tunes played in the background.

They were then moved to a different room where they discussed the difference between two food products with an average-looking young man.

At the end of their conversation, the man asked the girl for her phone number as he wanted to take her out for a drink.

Success or failure was determined by the music playing in the waiting room.

When a 'neutral' song -- 'L'heure du thé' by Vincent Delerm -- was played, only 28 per cent of women gave their number out.

But when 'Je l'aime à mourir' -- a well-known love song by French songwriter Francis Cabrell -- was played, that success rate nearly doubled to 52 per cent.

"The results are interesting for scientists who work on the effect of background music on individuals' behaviour," Guéguen said.

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Take The Strain:
New Bacterial Strain Could Clean Up Oil Spills
by Sir Thomas More

A newly discovered strain of bacteria produces non-toxic, comparatively inexpensive 'rhamnolipids' that help degrade polycyclic aromatic hydrocarbons (PAHs) -- environmental pollutants that are one of the most harmful aspects of oil spills.

Because of these unique characteristics, the bacterium could be of considerable value in the long-term cleanup of the disastrous Gulf Coast oil spill.

"PAHs are a widespread group of toxic, carcinogenic and mutagenic compounds, but also one of the biggest concerns about oil spills," said Professor Xihou Yin, a research assistant at the Oregon State University College of Pharmacy.

"Some of the most toxic aspects of oil to fish, wildlife and humans are from PAHs."

"They can cause cancer, suppress immune system function, cause reproductive problems, nervous system effects and other health issues."

"This particular strain of bacteria appears to break up and degrade PAHs better than other approaches we have available."

The discovery is strain 'NY3' of Pseudomonas aeruginosa.

It was isolated from a site in Shaanxi Province in China, where soils had been contaminated by oil.

P. aeruginosa is widespread in the environment and can cause serious infections, but usually in people with health problems or compromised immune systems.

However, some strains also have useful properties, including the ability to produce a group of biosurfactants called rhamnolipids.

A surfactant is a type of wetting agent that lowers surface tension between liquids –- but we recognize surfactants more commonly in such products as dishwashing detergent or shampoo.

Biosurfactants are produced by living cells such as bacteria, fungi and yeast, and are generally non-toxic, environmentally benign and biodegradable.

By comparison, chemical surfactants are usually derived from petroleum, are often toxic to health and ecosystems, and resist complete degradation.

Although rhamnolipids have been used for many years, the newly discovered strain, NY3, stands out for some important reasons.

Researchers said in the new study that it has an 'extraordinary capacity' to produce rhamnolipids that could help break down oil, and then degrade some of its most serious toxic compounds, the PAHs.

"The real bottleneck to replacing synthetic chemicals with biosurfactants like rhamnolipid is the high cost of production," Professor Yin said.

"Most of the strains of P. aeruginosa now being used have a low yield of rhamnolipid."

"But strain NY3 has been optimised to produce a very high yield of 12 grams per litre, from initial production levels of 20 milligrams per litre."

More research to further reduce costs and scale up production will be required before strain NY3 is adopted for commercial use.

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Let's Spit On It:
Saliva Beading Has Practical Applications
by Simon Magus

Researchers have discovered why strands of fluids such as saliva containing long molecules called polymers form beads when stretched.

These findings that could be used to improve industrial processes and for administering drugs in 'personalised medicine.'

"Any kindergartener is familiar with this beading phenomenon, which you can demonstrate by stretching a glob of saliva between your thumb and forefinger," said Professor Osman Basaran of Purdue University.

Before the strand of spittle breaks, a string of beads is formed.

"The question is, why does this beading take place only in some fluids containing polymers but not others?" Professor Basaran said.

Purdue postdoctoral researcher Pradeep Bhat and his colleagues have determined the mechanism behind the beading and created a computational model to simulate the phenomenon.

Knowing the answer to this question might enable researchers to design systems that precisely control bead formation, leading to improvements in various technologies such as inkjet printing.

The information also might be used in a system that precisely dispenses the correct dose of medications for individual patients based on simple blood tests.

Saliva and other complex 'viscoelastic' fluids like shaving cream and shampoo contain long chains of molecules called polymers.

In the case of saliva, the polymers are proteins known as mucopolysaccharides.

In comparison, liquids such as water and other so-called "Newtonian" fluids do not form the beads because they lack polymers.

Conventional wisdom has held that all fluids containing polymers should form the beads, but researchers have shown that assumption to be wrong and have demonstrated why.

The researchers tested saliva and a material contained in a strip on the leading edge of disposable razors.

"You moisten the razor strip with water, which causes it to swell, press it against a finger and pull it," said Professor Basaran.

"Unlike saliva, you see strands of liquids formed but no beads."

A key factor in the beading mechanism is fluid inertia, or the tendency of a fluid to keep moving unless acted upon by an external force.

Other major elements are a fluid's viscosity; the time it takes a stretched polymer molecule to 'relax' or snap back to its original shape when stretching is stopped; and the 'capillary time' or how long it would take for the surface of the fluid strand to vibrate if plucked.

"It turns out that the inertia has to be large enough and the relaxation time has to be small enough to form beads," Bhat said.

The researchers discovered bead formation depends on two ratios -- the viscous force compared to inertial force and the relaxation time compared to the capillary time.

Because smearing 'satellite' beads form around droplets produced by an inkjet printer, learning how to control bead formation might be used to improve printing.

Findings also may help to improve an industrial process called electrospinning, used to make a variety of products, and spray coating used in painting.

"The idea is that, if you are operating an inkjet printer, for example, you would be able to control these ratios to prevent the bead formation," Basaran said.

Findings may help to perfect a new type of drug-dispensing technology being developed for 'personalized medicine.'

The technique involves using an inkjet-printing nozzle to deposit drops of medication onto an edible substrate, such as paper or a sugar pill.

The approach might be used by patients with disorders that require precise doses of medication depending on daily blood measurements.

"Patients might be able to do this even at home," said Professor Basaran

"The patient will perform a routine sort of blood analysis, similar to blood-glucose monitoring, and then use this device to 'print' the exact quantity of drug based on the blood measurement, which would be done every day."

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Breast is Best:
Probiotic Found in Breast Milk Aids Digestion
by Simon Magus

Researchers have discovered that a probiotic found in breast milk reduces or eliminates painful cramping in the gut.

Tests on mice to showed that a specific strain of Lactobacillus reuteri decreases the force of muscle contractions in the gut within minutes of exposure.

L. reuteri naturally occurs in the gut of many mammals and is be found in human breast milk.

Increasing the intake of this bacterium may help alleviate symptoms of a wide range of gut disorders, such as irritable bowel syndrome, inflammatory bowel disease, functional bowel disorders, and constipation.

"Scientifically and evidence-based approaches to nutrition to correct potential bacterial imbalance in the intestine and thereby promote better health and possibly restore health in diseases associated with these imbalances," said Wolfgang Kunze of St. Joseph's Healthcare in Ontario, Canada.

Kunze and his colleagues introduced L. reuteri into isolated pieces of small intestine taken from healthy and previously untreated mice.

The bacterium was then added to a warm salt solution flowing through the intestine.

The pressure caused by natural contractions was measured before, during, and after the addition of L. reuteri.

Relaxation of smooth muscle tissue was compared with the action of the bacterium.

Researchers also tested the electrical activity of single intestinal sensory nerve cells.

"It might not be possible for most of us to get breast milk from the tap, but we can still benefit from some of the life-supporting substances it carries." said Dr Gerald Weissmann, editor-in-chief of the FASEB Journal, the peer-reviewed publishers of the research.

"This research shows that the relationship between humans and microbes can be beneficial for both."

"The Lactobacillus finds a new home, and we're no longer up tight."

Image credit: http://picasaweb.google.com/replytojain / CC BY-SA 3.0

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Naturally:
Simulating the Iridescence of Tropical Butterflies
by Simon Magus

Scientists have found a way to simulate the stunningly bright and beautiful colours found on the wings of tropical butterflies.

The new technique could result in bank notes and credit cards that are harder to forge.

"We have unlocked one of nature's secrets and combined this knowledge with state-of-the-art nanofabrication to mimic the intricate optical designs found in nature,' said Mathias Kolle of Cambridge University.

"Although nature is better at self-assembly than we are, we have the advantage that we can use a wider variety of artificial, custom-made materials to optimise our optical structures."

Kolle collaborated with Professors Ullrich Steiner and Jeremy Baumberg on a study of the Indonesian Peacock or Swallowtail butterfly (Papilio blumei).

The butterfly's wing scales are composed of intricate, microscopic structures that resemble the inside of an egg carton.

Their shape and the fact that they are made up of alternate layers of cuticle and air results in intense colours.

Using several nanofabrication procedures, Kolle and his colleagues made structurally identical copies of the butterfly scales.

These copies produced the same vivid colours as the butterfly's wings.

Being able to mimic these colours has promising applications in security printing.

"These artificial structures could be used to encrypt information in optical signatures on banknotes or other valuable items to protect them against forgery," said Kolle.

"We still need to refine our system but in future we could see structures based on butterflies wings shining from a £10 note or even our passports."

In fact, the butterfly may itself be using its colours as a security measure -- appearing one colour to potential mates but another colour to predators.

"The shiny green patches on this tropical butterfly's wing scales are a stunning example of nature's ingenuity in optical design," Kolle said.

"Seen with the right optical equipment these patches appear bright blue, but with the naked eye they appear green."

"This could explain why the butterfly has evolved this way of producing colour."

"If its eyes see fellow butterflies as bright blue, while predators only see green patches in a green tropical environment, then it can hide from predators at the same time as remaining visible to members of its own species."

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It's Personal:
Propensity to Shoplift Indicated by Personality
by Sir Thomas More

Psychologists have identified dimensions of personality seen in persons prone to shoplifting.

The new study identified three main traits: Being male; unpleasant and antisocial; and disorganised and unreliable.

Research also showed that younger and outgoing people are more likely to steal from stores or commit minor fraud.

"I'm the kind of psychologist who thinks 'what kind of person does (or doesn't do) antisocial things?' when I think about the crimes people commit," said Dr Vincent Egan of the University of Leicester's School of Psychology.

"So I sought to explore the personalities of people who shoplift or fraudulent in commercial settings, compared to those who claim to be honest."

"Most forensic psychological research with criminals focuses on sexual and violent offences, so it was interesting to think about different types of offender."

Dr Egan and a postgraduate student, David Taylor, studied a sample of 114 shoppers aged from 16 to 80 years of age.

The shoppers anonymously completed four questionnaires to measure personality, consumer ethical beliefs, attitudes to shoplifting, and demographics.

Analysis of the data found those lower in emotional stability, higher in extraversion and lower on agreeableness, conscientiousness and intellect were more accepting of unethical consumer behaviour and shoplifting.

"My results suggest dishonest consumer behaviour is narrowly associated with how unpleasant and disorganised you are," Dr Egan said.

"Separate to this, people who commit fraudulent crimes associated with benefiting at the expense of the seller may simply be younger and more outgoing so carried away by the moment."

Of the 114 sampled, 68 had never shoplifted, 30 had shoplifted more than a year ago, and 16 had shoplifted within the past year.

The active shoplifters were significantly younger than the inactive shoplifters and those who had never shoplifted.

The results also found all the currently active shoplifters were male.

"This study looked at ordinary British people visiting a large superstore," said Dr Egan.

"It looked at a variety of ordinary shoppers, not just those who had been convicted of shoplifting."

"We extended thinking by looking at the casual kinds of fraud some people commit."

"By understanding the pathways into these kinds of offences, we can hopefully reduce them in the future."

Image credit: http://www.flickr.com/photos/jacbt/ / CC BY 2.0

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In Hot Water:
Ocean Has Warmed Significantly in 16 Years
by Simon Magus

The upper layer of the world's ocean has warmed since betwen 1993 and 2008 -- a strong indicator of climate change.

A new study shows that the energy stored in the oceans is enough to power over three trillion 100 watt light bulbs.

"We are seeing the global ocean store more heat than it gives off," said John Lyman, an oceanographer at NOAA's Joint Institute for Marine and Atmospheric Research.

An international team of scientists analysed nine different estimates of heat content in the upper ocean from 1993 to 2008.

They combined these estimates to assess the size and certainty of growing heat storage in the ocean.

"The ocean is the biggest reservoir for heat in the climate system," said Josh Willis, an oceanographer at NASA's Jet Propulsion Laboratory.

"So as the planet warms, we're finding that 80 to 90 per cent of the increased heat ends up in the ocean."

Measurements by an array of autonomous free-floating ocean floats called Argo and earlier devices called expendable bathythermographs (XBTs) demonstrate that ocean heat content has increased over the last 16 years.

But the team notes that there are still uncertainties and some biases.

"The XBT data give us vital information about past changes in the ocean, but they are not as accurate as the more recent Argo data," said Gregory Johnson, an oceanographer at NOAA's Pacific Marine Environmental Laboratory.

"However, our analysis of these data gives us confidence that on average, the ocean has warmed over the past decade and a half, signalling a climate imbalance."

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Hot Stuff:
Caffeine Could Slow Dementia & Restore Cognition
by Sir Thomas More

Caffeine is the most widely consumed psychoactive drug in the world and is a key ingredient in staple drinks such as tea, coffee, and cola.

Now scientists have used epidemiological studies and research on animals to show that caffeine may protect against the cognitive decline seen in dementia and Alzheimer's disease (AD).

A special supplement to the Journal of Alzheimer's Disease focuses on this topic and presents key findings.

Guest editors Alexandre de Mendonça of the University of Lisbon and Rodrigo A. Cunha of the University of Coimbra assembled a group of international experts to explore the beneficial effects of caffeine on the brain.

"Epidemiological studies first revealed an inverse association between the chronic consumption of caffeine and the incidence of Parkinson's disease," according to Mendonça and Cunha.

"This was paralleled by animal studies of Parkinson's disease showing that caffeine prevented motor deficits as well as neurodegeneration."

"Later a few epidemiological studies showed that the consumption of moderate amounts of caffeine was inversely associated with the cognitive decline associated with ageing as well as the incidence of Alzheimer's disease."

"Again, this was paralleled by animal studies showing that chronic caffeine administration prevented memory deterioration and neurodegeneration in animal models of ageing and of Alzheimer's disease."

Other key findings in the supplement include:

  • Multiple beneficial effects of caffeine to normalise brain function and prevent its degeneration
  • Caffeine's neuroprotective profile and its ability to reduce the production of Amyloid Beta, the main constituent of plaques in the brains of Alzheimer's disease
  • Caffeine as a candidate disease-modifying agent for Alzheimer's disease
  • Positive impact of caffeine on cognition and memory performance
  • Identification of adenosine A2A receptors as the main target for neuroprotection afforded by caffeine consumption
  • Epidemiological studies corroborated by meta-analysis suggesting that caffeine may be protective against Parkinson's disease
  • Several methodological issues must be solved before advancing to decisive clinical trials

"The daily follow-up of patients with AD has taught us that improvement of daily living may be a more significant indicator of amelioration than slight improvements in objective measures of memory performance," said Mendonça and Cunha.

"One of the most prevalent complications of AD is depression of mood, and the recent observations that caffeine might be a mood normaliser are of particular interest."

The entire issue has been made available on a no-fee basis at http://iospress.metapress.com/content/t13614762731/.

Image credit: http://www.flickr.com/photos/refractedmoments/ / CC BY 2.0

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So Long, Silicon:
DNA is the Future of Computer Chips
by Simon Magus

Scientists have created a new way of creating logic circuits used in computer chips that exploits the self-regulating properties of DNA.

Using the new technique, a single person could produce more simple logic circuits in a day than the world's entire output of silicon chips in a month.

Professor Chris Dwyer of Duke University's Pratt School of Engineering mixed customised snippets of DNA and other molecules to literally billions of identical, tiny, waffle-looking structures.

These nanostructures efficiently self-assemble and when different light-sensitive molecules are added to the mixture, the waffles exhibit programmable properties that can be easily used.

"It's like taking pieces of a puzzle, throwing them in a box and as you shake the box, the pieces gradually find their neighbors to form the puzzle," said Professor Dwyer.

"What we did was to take billions of these puzzle pieces, throwing them together, to form billions of copies of the same puzzle."

Using light to excite these molecules, known as chromophores, simple logic gates can be created -- these circuits are the fundamental building blocks of all computer processors.

"When light is shined on the chromophores, they absorb it, exciting the electrons," Professor Dwyer said.

"The energy released passes to a different type of chromophore nearby that absorbs the energy and then emits light of a different wavelength."

"That difference means this output light can be easily differentiated from the input light, using a detector."

Professor Dwyer is convinced that the new technique will lead to a new generation of computer chips derived from DNA.

"This is the first demonstration of such an active and rapid processing and sensing capacity at the molecular level," he said.

"Conventional technology has reached its physical limits."

"The ability to cheaply produce virtually unlimited supplies of these tiny circuits seems to me to be the next logical step."

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That's Deep:
Quantum Mechanics Uncovers Secrets of Earth's Crust
by Sir Thomas More

Scientists have employed quantum mechanics to discover that the most common mineral on our planet is relatively uncommon deep inside the Earth's crust.

Using some of the most powerful supercomputers available, a team of physicists simulated the behaviour of silica in a high-temperature, high-pressure form that is difficult to study in a laboratory environment.

Silica makes up two-thirds of the Earth’s crust, and is used to create products ranging from glass and ceramics to computer processors and fibre optic cables.

"Silica is all around us," said doctoral student Kevin Driver of Ohio State University.

"But we still don’t understand everything about it."

"A better understanding of silica on a quantum-mechanical level would be useful to earth science and potentially to industry as well."

"As you might imagine, experiments performed at pressures near those of Earth’s core can be very challenging."

"By using highly accurate quantum mechanical simulations, we can offer reliable insight that goes beyond the scope of the laboratory."

Earth’s interior structure exists in three layers called the crust, mantle, and core.

The outer two layers (the mantle and the crust) are largely made up of silicates -- mineral compounds that contain silicon and oxygen.

But the detailed structure and composition of the deepest parts of the mantle remain unclear.

Even the role that the simplest silicate -- silica -- plays in the planet's mantle is not well understood.

"Say you’re standing on a beach, looking out over the ocean," said Driver.

"The sand under your feet is made of quartz, a form of silica containing one silicon atom surrounded by four oxygen atoms."

"But in millions of years, as the oceanic plate below becomes subducted and sinks beneath the Earth’s crust, the structure of the silica changes dramatically."

Driver, his advisor John Wilkins, and their co-authors used a quantum mechanical method to design computer algorithms that would simulate these silica structures.

They found that the behaviour of the dense, alpha-lead oxide form of silica did not match up with any global seismic signal detected in the lower mantle.

This indicates that the lower mantle is relatively devoid of silica, except perhaps in localised areas where oceanic plates have subducted.

The researchers used a method called quantum Monte Carlo (QMC) that was developed during World War II as part of the effort to create an atomic bomb.

"This work demonstrates both the superb contributions a single graduate student can make and that the quantum Monte Carlo method can compute nearly every property of a mineral over a wide range of pressure and temperatures," said Wilkins.

Image credit: http://commons.wikimedia.org/wiki/User:CharlesC / CC BY-SA 3.0

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The Coffee Ring of Truth:
New Approach to Biosensing Has Unusual Inspiration
by Sir Thomas More

If you spill your coffee on a table, the spot left after the liquid evaporates has a darker ring around its perimeter that contains a much higher concentration of particles than the centre.

As this 'coffee ring' phenomenon occurs with many liquids, scientists working on a new study believe that such rings can be used by biosensing devices to examine blood or other fluids for disease markers.

"Understanding micro and nano-particle transportation within evaporating liquid droplets has great potential for several technological applications, including nanostructure self-assembly, lithography patterning, particle coating, and biomolecule concentration and separation," said Professor Chih-Ming Ho of the UCLA Henry Samueli School of Engineering and Applied Science.

"However, before we can engineer biosensing devices to do these applications, we need to know the definitive limits of this phenomenon."

"So our research turned to physical chemistry to find the lowest limits of coffee-ring formation."

"If we consider human blood, or saliva, it has a lot of micro and nano-scale molecules or particles that carry important health information," said Dr Tak-Sing Wong of UCLA Engineering's department of mechanical and aerospace engineering.

"If you put this blood or saliva on a surface, and then it dries, these particles will be collected in a very small region in the ring."

"By doing so, we can quantify these biomarkers by various sensing techniques, even if they are very small and in a small amount in the droplets."

As water evaporates from a droplet, particles suspended inside the liquid move to the edges.

Once all the water has evaporated, the particles are concentrated in a ring around the stain left behind.

But if a droplet is small enough, the water will evaporate faster than the particles move.

Instead there will be a relatively uniform concentration in the stain, as the particles have not had enough time to move to the edges.

"It is the competition between the timescale of the evaporation of the droplet and the timescale of the movement of the particles that dictates coffee-ring formation," said Xiaoying Shen, the paper's lead author and a senior microelectronics major at Peking University in China.

"Knowing the minimum size of this so-called coffee ring will guide us in making the smallest biosensors possible," Dr Wong said.

"This means that we can pack thousands, even millions, of small micro-biosensors onto a lab-on-a-chip, allowing one to perform a large number of medical diagnostics on a single chip."

"This may also open the doors to potentially detecting multiple diseases in one sitting."

"There's another important advantage -- this whole process is very natural, it's just evaporation."

"We don't need to use additional devices, such as an electrical power source or other sophisticated instruments to move the particles."

"Evaporation provides a very simple way of concentrating particles and has potential in medical diagnosis."

"For example, researchers at Vanderbilt University were recently awarded a Gates Foundation Research Fund for proposing the use of the coffee-ring phenomenon for malaria detection in developing countries."

Image credit: http://www.flickr.com/photos/free-photos/ / CC BY 2.0

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Cheer Up:
Magnetic Fields Treat Depression
by Simon Magus

Depressives who do not respond to drug treatment may have an alternative -- a non-invasive procedure that bombards the brain with a magnetic field.

The first major trial of repetitive transcranial magnetic stimulation (rTMS) found that it produced significant antidepressant effects in some patients, with few side effects.

"Although rTMS treatment has not yet lived up to early hopes that it might replace more invasive therapies, this study suggests that the treatment may be effective in at least some treatment-resistant patients," said Dr Thomas R. Insel, director of the National Institute of Mental Health (NIMH).

rTMS treatment accounted for remissions in 14 per cent of antidepressant-resistant patients -- compared to about 5 per cent for the control group who were given a simulated treatment as a placebo.

"This study should help settle the debate about whether rTMS works for depression," said team leader Dr Mark George of the Medical University of South Carolina.

"We can now follow up clues suggesting ways to improve its effectiveness, and hopefully further develop a potential new class of stimulation treatments for other brain disorders."

The study indicated some patients might require as many as 5-6 weeks of daily rTMS treatment.

Most patients who went into remission required 3-5 weeks of treatment.

"For treatment resistant-patients, we found that rTMS is at least as good as current medications or anything else we have available, except ECT," said Dr George.

"Our current antidepressants do not work for many people."

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So Cool:
Mammoth DNA Yields Blood Protein with Anti-Freeze Properties
by Sir Thomas More

Ancient DNA preserved in bones from Siberian mammoths has been used to recreate a unique variant of haemoglobin that allowed the mammals to thrive in cold environments.

"Three highly unusual changes in the protein sequence allowed the mammoth's blood to deliver oxygen to cells even at very low temperatures, something that indicates adaptation to the Arctic environment," said Professor Roy Weber of the University of Aarhus.

"It has been remarkable to bring a complex protein from an extinct species, such as the mammoth, back to life," said Professor Alan Cooper, Director of the Australian Centre for Ancient DNA (ACAD) at the University of Adelaide, where the mammoth haemoglobin sequences were determined.

"This is true palaeobiology, as we can study and measure how these animals functioned as if they were alive today."

The project began when Professor Kevin Campbell of the University of Manitoba contacted Professor Cooper to suggest resurrecting mammoth haemoglobin.

"At the time, I thought 'what a great idea' -- but it's never going to work," Professor Cooper said.

"Still, bringing an extinct protein back to life is such an important concept, we've got to try it."

The team transcribed the mammoth haemoglobin DNA sequences into RNA and inserted them into E. Coli bacteria -- the altered organisms manufactured the authentic mammoth protein.

"The resulting haemoglobin molecules are no different than 'going back in time' and taking a blood sample from a real mammoth," said Professor Campbell.

"We've managed to uncover physiological attributes of an animal that hasn't existed for thousands of years."

"Our approach opens the way to studying the biomolecular and physiological characteristics of extinct species, even for features that leave no trace in the fossil record."

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Hot Stuff:
Chillis Point the Way to Non-Addictive Painkillers
by Simon Magus

Researchers have discovered that a substance similar to capsaicin -- which gives chilli peppers their heat -- is produced by the body at the site of pain.

By finding ways to block the action of these endogenous capsaicin-like molecules, scientists hope that a new class of non-addictive painkillers will be created.

"Nearly everyone will experience persistent pain at some point in their lifetime," said Dr Kenneth Hargreaves, a professor of Endodontics at the University of Texas.

"Our findings are truly exciting because they will offer physicians, dentists and patients more options in prescription pain medications."

"In addition, they may help circumvent the problem of addiction and dependency to pain medications, and will have the potential to benefit millions of people who suffer from chronic pain every day."

"Capsaicin is an ingredient in hot chilli peppers and causes pain by activating a receptor called transient potential vanilloid 1 (TRPV1)."

"We started out seeking the answer to the question: 'Why is TRPV1 consistently activated in the body upon injury or painful heat?'"

"We wanted to know how skin cells talk to pain neurones."

"What we found was much more surprising and exciting."

"We have discovered a family of endogenous capsaicin-like molecules that are naturally released during injury, and now we understand how to block these mechanisms with a new class of non-addictive therapies."

Experiments on mice showed that they creates their own natural endogenous capsaicins when they were subjected to pain.

These compounds were later identified as a series of fatty acids called oxidized linoleic acid metabolites (OLAMs) -- metabolises from the linoleic acid that is found naturally in the body.

Dr Hargreaves and his colleages have now developed two new classes of painkillers using drugs that either block the synthesis of OLAMs or antibodies that inactivate them.

With the right drug delivery technology, these new painkillers have the potential to deal with pain at its source -- in contrast to opiates that must travel to the brain to be effective.

Crucially, these novel analgesics have none of the addictive potential of opiates.

"This is a major breakthrough in understanding the mechanisms of pain and how to more effectively treat it," Dr Hargreaves said.

"These data demonstrate, for the first time, that OLAMs constitute a new family of naturally occurring capsaicin-like agents, and may explain the role of these substances in many pain conditions."

"This hypothesis suggests that agents blocking either the production or action of these substances could lead to new therapies and pharmacological interventions for various inflammatory diseases and pain disorders such as arthritis, fibromyalgia and others, including pain associated with cancer."

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Small World:
Scientists Create Smallest Ever 3D Map
by Sir Thomas More

Scientists have created a 3D map of the earth so small that 1,000 of them could fit on one grain of salt.

They developed a heated silicon tip with a sharp apex -- 100,000 times smaller than a sharpened pencil -- to simply and cheaply create patterns and structures as small as 15 nanometres.

"Advances in nanotechnology are intimately linked to the existence of high-quality methods and tools for producing nanoscale patterns and objects on surfaces," said Dr Armin Knoll of IBM Research in Zurich.

"With its broad functionality and unique 3D patterning capability, this nanotip-based patterning methodology is a powerful tool for generating very small structures."

The equipment can fit on a tabletop and is cheaper and less complex to use than existing nanofabrication techologies such as electron beam lithography.

The nanotip is attached to a flexible cantilever that scans the surface of the substrate material with the accuracy of one nanometre -- a millionth of a millimetre.

By applying heat and force, the nanotip can remove substrate material based on predefined patterns -- operating like a 'nanomilling' machine with ultra-high precision.

Researchers focused on two types of substrate materials -- a polymer called polyphthalaldehyde and a molecular glass similar to substrates used in conventional nanofabrication techniques known as resists.

"The material was a 'make it or break it' issue," said Jim Hedrick of IBM Research in Almaden.

"We had to find and synthesise materials which form mechanically tough glasses and yet can be easily thermally decomposed into non-reactive volatile units."

The 22 by 11 micrometre world map was created in polyphthalaldehyde, originally developed by IBM Fellow Hiroshi Ito in the 1980s.

Exposed to high temperatures, the components of this chain-like organic molecule unzips and falls into volatile pieces.

A self-amplified reaction causes the molecule to decompose and thus accelerates the patterning process by outpacing the mechanical motion of the nanotip.

Potential applications for the technology range from the fast prototyping of nano-sized devices for computer chips to the production of micron-sized lenses and lens-arrays for the coming generation of optical computing devices.

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Strange Machine:
Bizarre State of Matter Could Lead to Quantum Computers
by Sir Thomas More

Researchers have discovered that ultracold mixes of electrons caught in magnetic traps could have the necessary properties for constructing fault-tolerant quantum computers.

These '5/2 quantum Hall liquids' have a 'quantum registry' that is immune to information loss from external perturbations.

"The big goal, the whole driving force, besides deep academic curiosity, is to build a quantum computer out of this," said Professor Rui-Rui Du of Rice University.

"The key for that is whether these 5/2 liquids have 'topological' properties that would render them immune to the sorts of quantum perturbations that could cause information degradation in a quantum computer."

Professor du believes that the 5/2 liquids represent a 'non-Abelian' state of matter.

Abelian processes are commutative -- that is to say that the order of operation does not affect the outcome.

In everyday life, washing and drying clothes is a non-commutative operation.

Washing and then drying produces a different result to drying and then washing -- making it analogous to non-Abelian processes.

"It will take a while to fully understand the complete implications of our results, but it is clear that we have nailed down the evidence for 'spin polarisation,' which is one of the two necessary conditions that must be proved to show that the 5/2 liquids are non-Abelian," Professor Du said.

As the 5/2 liquids are non-Abelian, they have a quantum registry where information doesn't change due to external quantum perturbations.

"In a way, they have internal memory of their previous state," said Professor Du.

Before the technology is commercialised, there are hurdles to be overcome.

The research team spent several years building a demagnetisation refrigerator needed to cool 5-millimetre squares of ultra-pure semiconductors to within one-10,000th of a degree of absolute zero.

Gallium arsenide semiconductors were used in the experiments -- the purest available to the researchers.

Before the technology makes an appearance in desktop computers, researchers will have to find a semiconductor that is feasible for use at room temperature.

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Keep Taking The Tablets:
7th Century BC Treaty Unearthed
by Sir Thomas More

Archaeologists have unearthed a clay tablet with a largely intact Assyrian treaty from the early 7th century BC

It is hoped that the discovery will shed light on the Assyrian's relations with the West at a crucial time in their history.

The cache of tablets including the treaty was unearthed last summer at the site of an ancient temple at Tell Tayinat, located in southeastern Turkey.

Known as the Vassal Treaties of Esarhaddon, the 43 by 28 centimetre tablet contains about 650 lines and is in a very fragile state.

"The tablet is quite spectacular," said Professor Timothy Harrison of the University of Toronto.

"It records a treaty -- or covenant -- between Esarhaddon, King of the Assyrian Empire and a secondary ruler who acknowledged Assyrian power."

"The treaty was confirmed in 672 BC at elaborate ceremonies held in the Assyrian royal city of Nimrud (ancient Kalhu)."

"In the text, the ruler vows to recognize the authority of Esarhaddon's successor, his son Ashurbanipal."

"The treaties were designed to secure Ashurbanipal's accession to the throne and avoid the political crisis that transpired at the start of his father's reign."

"Esarhaddon came to power when his brothers assassinated their father, Sennacherib."

The 7th century BC marked the rise of the Phrygians and other rival powers in highland Anatolia on the north-western frontier of the Assyrian empire.

This was also the time of the divided monarchy of Biblical Israel, as well as increased contact between the Levantine peoples of the Eastern Mediterranean and Egypt, as well as the Greeks.

It is hoped that analysis of the clay tablet will shed a light on the complexities of geopolitical relations in the ancient world.

"It will take months of further work before the document will be fully legible," said Professor Harrison.

"These tablets are like a very complex puzzle, involving hundreds of pieces, some missing."

"It is not just a matter of pulling the tablet out, sitting down and reading."

"We expect to learn much more as we restore and analyse the document."

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Fantastic Plastic:
Using Plastics to Make Cheaper Solar Panels
by Simon Magus

Researchers have developed novel techniques for producing electricity-conducting plastics known as conductive polymers.

A commercial process derived from the research could dramatically lower the cost of manufacturing solar panels.

"Conductive polymers have been around for a long time, but processing them to make something useful degraded their ability to conduct electricity," said Professor Yueh-Lin Loo of Princeton University.

"People didn't understand what was happening."

"We discovered that in making the polymers mouldable, their structures are trapped in a rigid form, which prevented electrical current from travelling through them."

"We have figured out how to avoid this trade-off."

"We can shape the plastics into a useful form while maintaining high conductivity."

Professor Loo and her colleagues developed a technique to relax the structure of the plastics by treating them with an acid after they were processed into the desired form.

They were then able to make a plastic transistor by printing the plastic onto a surface -- a fast and cheap method similar to the way an ink-jet printer produces a pattern on a piece of paper.

"Being able to essentially paint on electronics is a big deal," Professor Loo said.

"You could distribute the plastics in cartridges the way printer ink is sold, and you wouldn't need exotic machines to print the patterns."

Conductive polymers could represent a low-cost alternative to indium tin oxide (ITO), an expensive conducting material currently used in solar panels.

Currently, the electricity generated by plastic solar cells is collected by a transparent metal conductor made of ITO.

This conductor must be transparent so that sunlight can pass through it to the materials in solar cells that absorb the light energy.

"The cost of indium tin oxide is skyrocketing," said Professor Loo.

"To bring down the costs of plastic solar cells, we need to find a replacement for ITO."

"Our conducting plastics allow sunlight to pass through them, making them a viable alternative."

The researchers are also investigating the use of plastics as cheap diagnostic tools in medicine.

For example, there are plastics that turn from yellow to green when exposed to nitric oxide -- a chemical compound produced during ear infections in children.

"You wouldn't need any fancy machines or lab equipment to diagnose an infection," Professor Loo said.

"All you would need is your eyes to see the colour change in the plastics."

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Holy Music:
Is Music Replacing Religion?
by Simon Magus

Students and staff at the University of Leicester are being asked to reveal their music listening habits as part of a study into their relationship with music.

Dr Clive Marsh has been studying the relationship between popular culture and religion for over 15 years -- he believes that people's devotion to music is supplanting religion as a 'spiritual discipline'.

"I am interested in the ways in which people consume music -- what are they doing with it?" said Dr Marsh.

"Walking through Victoria Park in Leicester you see lots of people listening to their iPods seemingly caught up in their own private worlds."

"People devote hours and hours to music, often having daily or weekly listening rituals that they follow."

"People are starting to identify ‘canons’ of material from popular culture: resources which are worth returning to, again and again, for enjoyment, yes, but also to help people ‘think things through’."

"They are also locating ‘authoritative communities’ -- sometimes virtual communities: groups of people whose views they trust, who gather around music, bands, TV programmes or film-sites."

"Not just to talk about music, TV or film, but to reflect on how their listening and viewing habits inform their living and help them develop their philosophical, religious, political or ethical commitments."

The music listening survey is also being used across America, and the conclusions will be used to write a book-length study later this year.

Dr Marsh will deliver a lecture on on his research entitled ‘Adventures in Affective Space: The Reconstruction of Piety in an Age of Entertainment’ on Friday 7 May 2010 at the University of Leicester.

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Because You're Worth It
Hair Conditioner Scrubs CO2
by Simon Magus

Ingredients found in hair conditioner may end up preventing climate change.

Researchers believe that amino silicones offer a low-cost way to scrub CO2 from gases produced by coal-burning power stations

"We're very excited about this technology that may pave the way for a new process for carbon dioxide capture," said Dr Robert Perry of GE Global Research.

Amino silicones are used to condition damaged or hydrophilic hair -- as opposed to regular silicone which is hydrophobic and fails to adhere.

They are also used in fabric softeners and flexible high-temperature plastics.

Dr Perry and his colleagues have established that amino silicones could provide a less expensive and more efficient alternative to current CO2 scrubbers.

Lab tests show that amino silicones scrub more than 90 percent of the CO2 from simulated flue gases.

Now the imperative is to develop a commercially viable solution that removes and sequesters the CO2 from the amino silicones.

This would allow the amino silicones to be continuously recycled -- making the system even more cost-effective.

"The development of a low-cost solution for CO2 capture would go a long way in helping to address our clean energy goals," said Dr Perry.

"In the future, the gases that come out of power-plant smokestacks will be virtually free of carbon dioxide emissions."

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You're Surrounded:
Proteins Surrounding Genes Mean We're Unique
by Simon Magus

paralleltelomerequadruple.pngHuman individuality may not be determined by our genes but the proteins surrounding them.

These protein sequences known as transcription factors vary from person to person and may influence our appearance as well as our disposition towards certain diseases.

"We are rapidly entering a time when nearly anyone can have his or her genome sequenced," said Professor Dr Michael Snyder, chair of genetics at Stanford.

"However, the bulk of the differences among individuals are not found in the genes themselves, but in regions we know relatively little about."

"Now we see that these differences profoundly impact protein binding and gene expression."

Genes vary by only about 0.025 per cent across all humans.

Scientists have spent decades trying to understand how these tiny differences affect our development.

Yet non-coding regions of the genome -- which account for approximately 98 per cent of our DNA -- vary in their sequence by 1 to 4 per cent.

Professor Snyder and his colleagues have found that unique changes among individuals in the sequence of DNA affect the ability of transcription factors to bind to the regions that control gene expression.

As a result, the subsequent expression of nearby genes can vary significantly.

"People have done a lot of work over the years to characterise differences in gene expression among individuals," said Professor Snyder.

"We're the first to look at differences in transcription-factor binding from person to person."

"These binding regions or chunks vary among individuals and they have a profound impact on gene expression."

Two individual studies were conducted that compared the binding patterns of transcription factors in chimpanzees and yeast respectively.

"We conducted the two studies in parallel and found the same thing," Professor Snyder said.

"Many of the binding sites differed."

"When we mapped the areas of difference, we found that they were associated with key regulators of variation in the population."

"Together these two studies tell us a lot about the so-called regulatory code that controls variation among individuals."

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Tagging Along:
Printable RFID Tags Could Supplant Bar Codes
by Simon Magus

Researchers have developed a new technique that allows RFID tags to be printed on rolls of plastic.

By reducing the cost of manuacture, it could pave the way for RFID tags to supplant bar codes.

RFID tags are already used in smart cards such as the Oyster ticket used to travel on public transport in London.

They have also been incorporated into the new biometric passports introduced recently by the UK government.

But these devices are based on silicon and are too expensive for use in everyday applications such as tagging items in a supermarket.

Now researchers at Rice University in the US have colloborated with colleagues at Sunchon National University in Korea to create RFID tags that can be printed onto a roll of plastic.

Printable RFID tags are practical because they're passive in nature -- they power up when hit by radio waves at the right frequency and return the information they contain.

"If there's no power source, there's no lifetime limit," said Professor James Tour of Rice University.

"When they receive the RF signal, they emit."

Before the tags are ready of use outside the lab, researchers must find a way to reduce the size of the tags by two-thirds to match existing bar codes.

There are also issues around the range of the tags.

"Right now, the emitter has to be pretty close to the tags, but it's getting farther all the time," Professor Tour said.

"The practical distance to have it ring up all the items in your shopping cart is a metre."

"But the ultimate would be to signal and get immediate response back from every item in your store -- what's on the shelves, their dates, everything."

"At 300 meters, you're set -- you have real-time information on every item in a warehouse."

"If something falls behind a shelf, you know about it."

"If a product is about to expire, you know to move it to the front -- or to the bargain bin."

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Ladies Last:
Men's Names Still Come First
by Simon Magus

Putting male names before female names in writing is considered to be a remnant of sexist thinking from the 16th century.

But researchers have analysed the web and discovered that the practice is alive and well today.

"In the 16th century, naming men before women became the acceptable word-order to use because of the thinking that men were the worthier sex," said psychologist Dr Peter Hegarty of the University of Surrey.

"This grammar has continued with 'Mr and Mrs', 'his and hers' and the names of romantic couples like Shakespeare's Romeo and Juliet."

"While the original sexist ideas behind this grammar are no longer accepted, we wanted to investigate whether the sexist habit of male names coming before female names still holds true and the psychological reasons why this might be."

Using 10 popular British male and female names and another 10 popular American boys and girls names, the team searched the web using each of the possible male-female name pairs as search terms.

For British name pairs, the male-first name pairings accounted for 79 per cent of the mentions -- male-first mentions were 70 per cent for the Americans.

"These results were found to be statistically significant, and support the idea that gender stereotypes still affect the written language," Dr Hegarty said.

"It has been argued that the male-first effect isn't down to sexism but that it is due to phonological attributes of male names, or because male names come more readily to mind as they are popular and familiar."

"We therefore carried out further studies to investigate whether the male-first finding was a gender stereotyping effect."

A sample group of 121 people were asked to imagine a heterosexual couple who were either 'quite traditional and who conform strictly to gender scripts about how the two genders should behave' or 'non-traditional who deviate radically'.

They were then asked to write down five possible name-combinations for this hypothetical couple.

Participants named the imagined 'traditional couples' men-first more often -- but this effect was not seen in the naming of 'non-traditional' couples.

In a third study, 86 people were asked to write down names of an imagined lesbian or gay couple.

They were then asked to assign attributes such as annual earnings, interest in fashion, interest in sport and physical attributes to each individual.

Participants assigned significantly more of the masculine attributes and fewer of the feminine attributes to the person they named first.

"The results of our studies suggest that people tend to put men, or male qualities, before women," said Dr Hegarty.

"As this is a remnant of the sexist grammar of the 16th century, it would seem that psychologically, we are still sexist in writing."

But Dr Hegarty cautions that the effect does not always apply when dealing with couples that we know well:

"When people address greeting cards to couples, for example, they often put the person that they know best first, whether female or male."

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It's Not Easy Being Green:
US Consumers Won't Pay More for Organic Wine
by Simon Magus

California winemakers are struggling to get good prices from the sale of wine made with organic grapes.

While the wine is usually of high quality, a new study shows that slapping an eco-label on the bottle turns off consumers and drives down prices.

"You've heard of the French paradox?" said lead author Professor Magali Delmas of the University of California in Los Angeles.

"Well, this is the American version."

"You'd expect anything with an eco-label to command a higher price, but that's just not the case with California wine."

While the general public miss out on good quality wine, savvy oenophiles have an opportunity to save money.

"Wine made with organic grapes -- especially if it has an eco-label -- is a really good deal," said study co-author Laura E. Grant, a Ph.D. candidate in environmental science and management at the University of California in Santa Barbara.

"For the price of conventional wine, you get a significantly better quality wine."

"Wine made with organically grown grapes is higher quality," Professor Delmas added.

"Growers have to devote more time and attention and take better care of organically certified vines than conventional vines, and our results show that these efforts are apparent in the product."

The study found that the 'made from organically grown grapes' label not only negated the price premium for using certified grapes but actually drove prices 7 per cent below those for conventionally produced wines.

Only one-third of vintners using organically certified grapes actually advertised the fact on wine labels.

"Producers of two-thirds of these wines must suspect that consumers, for whatever reason, wouldn't appreciate the use of organically grown grapes," said Professor Delmas.

"Otherwise, why would they refrain from drawing attention to this benefit on their labels?"

One theory is that consumers believe that wines made with organic grapes lack preservatives -- a result of confusion with 'organic wines' that do not contain sulphites.

But certified wines made with organic grapes are allowed to use sulphites as a preservative.

"Organic wine earned its bad reputation in the '70s and '80s," Grant said.

"Considered 'hippie wine,' it tended to turn to vinegar more quickly than non-organic wine. This negative association still lingers."

Today's organic wines are still susceptible to taint as a result of the lack of added preservatives.

"Without added sulphites, the wine turns into vinegar after a while, and you're likely to lose out on the opportunity for your wine to mature into something considerably richer than when purchased, which is the promise of fine wine," Professor Delmas said.

"So while no-sulphites-added is fine for white wines such as Chardonnay that you usually drink 'young,' it is not good for a red wine like a Cabernet Sauvignon that you want to keep to drink in a year or two."

Surprisingly, green consumers are more likely to be motivated by personal benefit than a desire to protect the environment.

"Consumers buy organically grown food because they think it is going to improve their health," said Professor Delmas.

"That motivation doesn't go a long way with wine."

"If consumers want to drink something healthy, they'll reach for wheat grass, not an alcoholic beverage."

Professor Delmas hopes that consumers start to get the message that wine produced with organic grapes tastes better.

"Vintners and regulators really need to communicate better what wine with organically grown grapes means and the potential impact on quality," she said.

"I don't think they've done that, and I think it's too bad."

"It's a real missed opportunity."

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Signs of Life?:
Living Organisms Could Emerge from Organic Molecules in Nebula
by Simon Magus

Potentially life-creating organic molecules have been observed in the Orion Nebula by the orbital Herschel Space Observatory.

An onboard detector called the Heterodyne Instrument for the Far Infrared (HIFI) captured light from the immense cloud of dust and gas to determine the chemical makeup of the molecules within.

A richly dense pattern of spikes -- each representing the emission of light from a specific molecule -- was found in the HIFI spectrum.

Among the molecules identified were those of water, carbon monoxide, formaldehyde, methanol, dimethyl ether, hydrogen cyanide, sulphur oxide, sulphur dioxide and their isotope analogues.

Researchers anticipate that new organic molecules will also be identified in the future.

"This HIFI spectrum, and the many more to come, will provide a virtual treasure trove of information regarding the overall chemical inventory and on how organics form in a region of active star formation," said Edwin Bergin of the University of Michigan and principal investigator of the HEXOS Key Programme on Herschel.

"It harbours the promise of a deep understanding of the chemistry of space once we have the full spectral surveys available."

HIFI was conceived to open new wavelength ranges for high resolution mapping -- especially when inaccessible to ground-based telescopes.

"It is astonishing to see how well HIFI works," said Frank Helmich, HIFI principal investigator at the SRON Netherlands Institute for Space Research.

"We obtained this spectrum in a few hours and it already beats any other spectrum, at any other wavelength, ever taken of Orion."

"Organics are everywhere in this spectrum, even at the lowest levels, which hints at the fidelity of HIFI."

"The development of HIFI took eight years but it was really worth waiting for."

Identification of the many features visible in the Orion spectrum was dependent on tools like the Cologne Database of Molecular Spectroscopy -- a collection of spectroscopic data covering several hundred molecular species.

“The high spectral resolution of HIFI shows the breath-taking richness of molecular species, which are present, despite of the hostile environment, in the stellar nurseries and sites for planet formation”, said Jürgen Stutzki, HIFI-co-principal investigator at the University of Cologne.

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Invaders from Outer Space:
A Quarter of Milky Way Star Clusters Originated Elsewhere
by Simon Magus

A new study has shown that up to one quarter of the star clusters in the Milky Way 'invaded' from other galaxies.

Researcher have also concluded that there may be as many as six dwarf galaxies yet to be discovered within the Milky Way -- rather than the two currently confirmed.

"Some of the stars and star clusters you see when you look into space at night are aliens from another galaxy, just not the green-skinned type you find in a Hollywood movie," said Dr Terry Bridges, an astronomer at Queen’s University in Ontario, Canada.

"These ‘alien’ star clusters have made their way into our galaxy over the last few billion years."

Astronomers previously suspected that some star clusters -- which contain from 100,000 to a million stars each -- were foreign to our galaxy.

But identifying those star clusters with origins in other galaxies was a difficult task.

Dr Bridges collaborated with Duncan Forbes of Swinburne University of Technology in Australia on solving this problem.

They examined old star clusters within the Milky Way galaxy using data from the Hubble Space Telescope.

This yielded the largest ever high-quality database to record the age and chemical properties of each of these clusters.

"We looked at all the data we could find," Dr Bridges said.

"The best data are from the Hubble Telescope because it has the best imaging."

"We looked at the ages and the amounts of heavy elements in these clusters, which can be measured from their stars."

One of the key findings of the study is that the Milky Way may have swallowed-up more dwarf galaxies than was previously thought.

These ‘mini’ galaxies of up to 100 million stars sit within our larger Milky Way.

The study suggests that many 'invading' star clusters came from dwarf galaxies -- which would mean that that the Milky Way may have far more dwarf galaxies than previously suspected.

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Knowing Me, Knowing You:
Other People May Know Us Better Than Ourselves
by Sir Thomas More

Many psychologists and others have long considered that the individual is the best judge of their own traits.

But a new study shows that while me may be good at assessing internalised traits such as anxiety, other people may be better at judging manifest behaviours like extroversion.

"I think that it's important to really question this knee-jerk reaction that we are our own best experts," said Professor Simine Vazire of Washington University.

"Personality is not who you think you are, it's who you are."

"Some people think by definition that we are the experts on our personality because we get to write the story, but personality is not the story -- it's the reality."

"So, you do get to write your own story about how you think you are, and what you tell people about yourself, but there still is reality out there, and, guess what?"

"Other people are going to see the reality, regardless of what story you believe."

Evidence of personality traits are obvious in the choices we make -- the clothes we choose to wear, how we decorate a bedroom, the content posted on a social networking site, and so on.

"Everything you touch you leave a mark of your personality," Professor Vazire said.

"You leave traces unintentionally."

"You give off hints of your personality that you don't even see yourself."

She used a battery of tests on 165 volunteers and discovered that while people were good at assessing their own internal traits such as anxiety, other people were better at observing external traits such as extroversion.

“You probably know pretty well your anxiety level, whereas others might not be in the position to judge that because, after all, you can mask your inner feelings,” said Professor Vazire.

“Others, though, are often better than the self in things that deal with overt behaviour.”

Professor Vazire believes that desirable traits such as intelligence, attractiveness, and creativity are hard for the self to judge objectively.

"There is so much at stake, meaning your life is going to be so much different if you are intelligent or not intelligent, attractive or not," she said.

"Everybody wants to be seen as intelligent and attractive, but these desirable traits we’re not going to judge accurately in ourselves."

We are better at judging friends’ intelligence than our own 'because it’s not that threatening to us to admit that our friends aren’t brilliant, but it’s more threatening to admit to ourselves that we’re not brilliant.'

A classic example of this is how we perceive ourselves in the mirror.

"We look in the mirror all the time, yet that's not the same as looking at a photo of someone else," Professor Vazire said.

"If we spent as much time looking at photos of others as we do ourselves, we'd form a much more confident and clear impression of the other's attractiveness than we would have of our own."

"Yet after looking in the mirror for five minutes we're still left wondering, 'Am I attractive or not?'"

"And still have no clue.'

"And it's not the case that we all assume that we're beautiful, right?"

For some personality traits, she says we miss the point if we look at thoughts and feelings and ignore the behaviour.

Bullies, for example, have thoughts and feelings that tell them they’re insecure and want to be liked and admired, which is not a horrible, nasty notion.

But they cannot see their behaviour as nasty and horrible, though, because their thoughts obscure their actions.

Similarly, if you think that you are warm and friendly, but friends and family say that you don't come across that way in reality, you might pay more attention to your behaviours.

"I believe I've presented evidence that should make people think twice," said Professor Vazire.

"On average, the people who know you best know you as well as you know yourself, no better, no worse than you."

'More importantly, there are things that both you know that they don't know, and things that they know that you don't know, and those lead to very interesting experiences and disagreements."

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The Root of All Evil:
'Rootkits' Pose Threat to Smartphone Security
by Simon Magus

smartphone.jpgComputer science researchers have showed that smartphones are vulnerable to a security exploit already used to compromise millions of desktop computers.

The study look at a type of malware known as a 'rootkits.'

Unlike viruses, rootkits attack the heart of a computer’s software -- its operating system.

They can only be detected from outside a compromised operating system with a specialised tool known as a virtual machine monitor, which can examine every system operation and data structure.

“Smart phones are essentially becoming regular computers,” said Professor Vinod Ganapathy of Rutgers’ School of Arts and Sciences.

“They run the same class of operating systems as desktop and laptop computers, so they are just as vulnerable to attack by malicious software, or ‘malware.’”

The researchers deliberately infected smartphones with rootkits to demonstrate how an attack on a smartphone could be used to eavesdrop on a user, track the movements of the owner via GPS, or rapidly drain the smartphone's battery to render it useless.

These actions could happen without the owner being aware of what happened or what caused them.

But the researchers point out that they have not employed vulnerabilities in current smartphones -- they deliberately infected the devices in order to assess the potential threat.

“What we’re doing today is raising a warning flag,” study co-author Professor Liviu Iftode said.

“We’re showing that people with general computer proficiency can create rootkit malware for smart phones."

"The next step is to work on defences.”

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Not with a Bang, But a Whimper:
Artificial Life is One Step Closer
by Simon Magus

joyce2.jpgArtificial life has come one step closer with the development of nucleic acids that replicate and exhibit Darwinian evolution -- but without any proteins or other cellular components.

These simple nucleic acids can act as catalysts and continue the process indefinitely.

"There’s nothing in biology in this system -- no proteins, no cells, no biological matter," said molecular biologist Professor Gerald Joyce of the Scripps Research Institute in San Diego.

"We just provide them with the building blocks."

Professor Joyce worked with PhD student Tracey Lincoln on taking naturally occuring RNA enzymes known as ribozymes and placing them in a growth medium.

They were heated and allowed to replicate until they had exhausted their fuel -- a random subset was extracted and put them in a new medium.

The ribozymes then competed with each other to consume as much of the medium as possible.

The more successful ribozymes came to dominate the culture and grew in complexity -- blindly finding solutions that made them more successful.

"They’re just molecules, so they do what they do until they run out of substrate," said Joyce.

"And this will go for ever -- it’s an immortal molecule, if you like."

"The key thing is it replicates itself, and passes information from parent to progeny down the line."

"There’s roughly 30 bits of information passed."

"Some functions are more fit than others, and those that are more fit ‘breed’ more, and are perpetuated more efficiently, and so it goes Darwinian."

Although the ribozymes have some characteristics of life, they still do not constitute a truly living system.

The challenge for researchers now is to create genetic systems that have all the qualities of life -- but without use of existing biological components.

"The aim is to create systems that have inventive capabilities, that can develop novel solutions to challenges posed by the environment."

"What we do have is a self-sustained chemical system that undergoes Darwinian evolution."

"They are synthetic genetic systems, and they are evolving."

"But they’re not living because they don’t yet show the capacity to invent a whole cloth of functions."

"The idea is to given them enough information wherewithal so they can start inventing their own solutions rather than just optimising existing solutions."

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Power Dressing:
Nanofibres Generate Electricity While You Walk
by Simon Magus

Engineers at the University of California in Berkeley have developed nanofibres that can be woven into clothing and generate electricity though mechanical stress, stretches and twists.

"This technology could eventually lead to wearable 'smart clothes' that can power hand-held electronics through ordinary body movements," said Professor Liwei Lin of the University of California in Berkeley, head of the international research team that developed the fibre nanogenerators.

"And because the nanofibres are so small, we could weave them right into clothes with no perceptible change in comfort for the user."

The flexible nanofibres are made from organic polyvinylidene fluoride, or PVDF, making them relatively easy and cheap to manufacture.

Previous efforts have focused on nanogenerators out of inorganic semiconducting materials, such as zinc oxide or barium titanate.

"Inorganic nanogenerators -- in contrast to the organic nanogenerators we created -- are more brittle and harder to grow in significant quantities," Professor Lin said.

Although the exact ratio of movement to power has yet to be determined, it appears that more vigourous movements result in more electricity generated.

"Surprisingly, the energy efficiency ratings of the nanofibres are much greater than the 0.5 to 4 per cent achieved in typical power generators made from experimental piezoelectric PVDF thin films, and the 6.8 per cent in nanogenerators made from zinc oxide fine wires," said the study's lead author, Chieh Chang.

"We think the efficiency likely could be raised further," said Professor Lin.

"For our preliminary results, we see a trend that the smaller the fibre we have, the better the energy efficiency."

"We don't know what the limit is."

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Walk, Don't Run:
Humans Built for Walking not Running
by Simon Magus

Humans, other higher primates, and bears are amongst the few animals that step first on the heel when walking, and then roll onto the ball of the foot and toes.

Researchers have now proved the advantage -- compared with heel-first walking, it takes 53 per cent more energy to walk on the balls of your feet, and 83 per cent more energy to walk on your toes.

"Our heel touches the ground at the start of each step, " said Professor David Carrier of the University of Utah, senior author of the new study.

"In most mammals, the heel remains elevated during walking and running."

"Most mammals -- dogs, cats, raccoons -- walk and run around on the balls of their feet."

'Ungulates like horses and deer run and walk on their tiptoes." he adds.

"Few species land on their heel -- bears and humans and other great apes [such as] chimps, gorillas, orang-utans."

"Our study shows that the heel-down posture increases the economy of walking but not the economy of running."

The major findings of the study include:

  • "The activity of the major muscles of the ankle, knee, hip and back all increase if you walk on the balls of your feet or your toes as opposed to landing on your heels," said Professor Carrier. "That tells us the muscles increase the amount of work they are producing if you walk on the balls of your feet."
  • "When we walk on the balls of our feet, we take shorter, more frequent strides," said Professor Carrier. "But this did not make walking less economical." Putting the heel down first and pivoting onto the ball of the foot makes the stride longer because the full length of the foot is added to the length of the step. But that has no effect on energy use.
  • The researchers wondered if stepping first on the balls of the feet took more energy than walking heel-first because people are less stable on their toes or balls of the feet. But increased stability did not explain why heel-first walking uses less energy.
  • Stepping heel-first reduced the up-and-down motion of the body's center of mass during walking and required less work by the hips, knees and ankles. Stepping first onto the balls of the feet slows the body more and requires more re-acceleration.
  • Heels-first steps also made walking more economical by increasing the transfer of movement or "kinetic" energy to stored or "potential" energy and back again. As a person starts to step forward and downward, stored energy is changed to motion or kinetic energy. Then, as weight shifts onto the foot and the person moved forward and upward, their speed slows down, so the kinetic energy of motion is converted back into stored or potential energy. The study found that stepping first onto the balls of the feet made this energy exchange less efficient that walking heels-first.
  • Heel-first walking also reduced the "ground reaction force moment" at the ankle. That means stepping first onto the ball of the foot "decreases the leverage, decreases the mechanical advantage" compared with walking heel-first, Professor Carrier said.
  • But if heel-first walking is so economical, why do so many animals walk other ways?

    "They are adapted for running," said Professor Carrier.

    "They've compromised their economy of walking for the economy of running."

    "We are not efficient runners."

    "In fact, we consume more energy to run than the typical mammal our size."

    "But we are exceptionally economical walkers."

    "This study suggests that one of the things that may explain such economy is the unusual structure of our foot."

    "The whole foot contacts the ground when we walk."

    "We have a big heel."

    "Our big toe is as long as our other toes and is much more robust."

    "Our big toe also is parallel to and right next to the second toe."

    "These features are distinct among apes, and provide the mechanical basis for economical walking."

    "No other primate or mammal could fit into human shoes."

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The Truth About Cats & Dogs:
Cat Owners Are Better Educated
by Simon Magus

The first comprehensive study of UK pet ownership in 20 years has yielded a number of unexpected results.

As well a showing a huge leap in the numbers of cats and dogs, the study shows that cat owners are more likely to be degree educated than their canine counterparts.

47.2 per cent of households with a cat had at least one person educated to degree level, while the figure was 38.4 per cent for households with dogs.

"We don't know why there is this discrepancy," said Dr Jane Murray, a lecturer in feline epidemiology at Bristol University.

The study, published in the Veterinary Record by Dr Murray and her colleagues, aimed to estimate the total number of UK domestic cats and dogs -- as well as identifying the characteristics of their owners.

A telephone survey of households in 2007 randomly selected from the electoral roll revealed that cats and dogs were owned by 26 per cent and 31 per cent of households respectively.

This data was then applied to data from the 2001 UK census -- yielding an estimate of 10.3 million cats and 10.5 million dogs living domestically.

The last peer-reviewed study, dating back to 1989, suggested there were 6.2 millon cats and 6.4 million dogs.

But it is the anomalous difference in degree education between cat and dog owners that has researchers puzzled.

"We did look at average household income but that wasn't significant," Dr Murray said.

"Our best guess is that it's to do with working hours and perhaps commuting to work, meaning people have a less suitable lifestyle for a dog."

"It's really just a hunch though."

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The End of Days:
Universal Entropy Much Worse Than Expected
by Hermes Trismegistus

Scientists investigating the rate of entropy in the universe have made a shocking discovery.

The universe appears to be running down at a rate 30 times greater than previously suspected.

The researchers used new data on black holes to calculate entropy -- the phenomenon where various types of energy are permanently converted to thermal energy.

The conclusion of entropy may be 'heat death' where all matter and energy in the universe eventually becomes thermal energy -- with no hope of reversing the process.

"We considered all contributions to the entropy of the observable universe -- stars, star light, the cosmic microwave background," said Chas Egan, a PhD student at the Australian National University's (ANU) Research School of Astronomy and Astrophysics.

"We even made an estimate of the entropy of dark matter."

"But it’s the entropy of super-massive black holes that dominates the entropy of the universe."

"When we used the new data on the number and size of super-massive black holes, we found that the entropy of the observable universe is about 30 times larger than previous calculations."

"Contrary to common opinion, the maintenance of all the complicated structures we see around us -- galaxies, stars, hurricanes and kangaroos -- have the net effect of increasing the disorder and entropy of the universe" said Dr Charley Lineweaver, co-ordinator of ANU’s Planetary Science Institute.

"But to be fair, their contributions are negligible compared to the entropy of super-massive black holes."

These findings have important implications for living systems on Earth and beyond.

"The universe started out in a low entropy state and, in accordance with the second law of thermodynamics, the entropy has been increasing ever since," Egan said.

"This is important because the amount of energy available to life in the universe, including terrestrial life, depends on the entropy of the universe."

"We’d like to know how much energy will be available to life forms anywhere in the universe, and where this energy is."

"The first step in this procedure is to determine the entropy of the universe."

"That is what we did."

The next phase of their research is to determine the point of maximum entropy to determine when we can expect heat death in the universe.

But there is one small reason to hope that the universe may not be ultimately doomed.

Physicist Erwin Schrödinger of Schrödinger's Cat fame helped to pioneer the mathematical analysis of living systems in his seminal 1944 book 'What is Life?'.

He believed that life itself was 'negative entropy' and that this quality was observable in living organisms.

Perhaps somewhere out there, extraterrestrial scientists are even now developing strategies to prevent the end of the universe.

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The Farmer Wants A Wife:
Most European Men Descend From Near East Farmers
by Simon Magus

A new study has found that 80% of men in Europe descend from the first farmers who migrated from the Near East around 10,000 years ago.

Previous studies suggested a Paleolithic origin for Europeans -- but genetic analysis of male Y-chromosomes seems to indicate migration from a single source in the Near East via Anatolia during the Neolithic period.

In Europe, farming spread from the Fertile Crescent -- the region extending from the eastern Mediterranean coast to the Persian Gulf and including the Tigris and Euphrates valleys.

But was the westerly spread of agriculture from the Near East driven by actual migration or the transfer of new ideas to indigenous hunter-gatherers?

"We focused on the commonest Y-chromosome lineage in Europe, carried by about 110 million men –- it follows a gradient from south-east to north-west, reaching almost 100% frequency in Ireland," said study leader Professor Mark Jobling of Leicester University.

"We looked at how the lineage is distributed, how diverse it is in different parts of Europe, and how old it is."

"In total, this means that more than 80% of European Y-chromosomes descend from incoming farmers," said Dr Patricia Balaresque, lead author of the study at Leicester University.

"In contrast, most maternal genetic lineages seem to descend from hunter-gatherers."

"To us, this suggests a reproductive advantage for farming males over indigenous hunter-gatherer males during the switch from hunting and gathering, to farming -– maybe, back then, it was just sexier to be a farmer."

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Who'd Have Thought It?:
Bacteria Capable of Complex Decision-Making
by Sir Thomas More

Researchers have discovered that bacteria are capable of far more complex decision-making than previously thought.

Their findings could lead to new medicines for combating pathogens as well as benefiting farmers who want to protect their crops from disease.

Bacterial cells contain a number of receptors and each one affects a particular behaviour or trait -- for example, where to move or even to become more virulent.

What has remained unknow is how individual receptors, by sensing their environment, directly affect a bacterium's behaviour and ability to adapt to its environment.

Gladys Alexandre -- an associate professor of biochemistry, cellular and molecular biology at the University of Tennessee at Knoxville -- is one of the first to isolate and study a receptor in this way.

Biologist normally study the common bacteria Escherichia coli as the model for bacteria's ability to move actively and independently.

But Professor Alexandre decided to look at the more complex soil bacterium, Azospirillum brasilense.

"As bacteria's ability to make decisions goes, E. coli is kind of dumb, which makes it easy for researchers to study sensing and information processing -- essentially, decision making -- in this bacterium," she said.

A. brasilense has 48 receptors versus as opposed to the five receptors generally found in E. coli.

Professor Alexandre and her colleagues homed in on a receptor that they suspected was involved in nitrogen fixing -- the biological process that turns atmospheric nitrogen gas into ammonium, a process that makes it available for metabolisation by other organisms.

But the exact biological processes involved were still unclear -- so Professor Alexandre turned to a colleague using the latest computer-based techniques for analysing genetic structures.

Igor Jouline of Oak Ridge National Laboratory was able to generate a model of the receptor's structure and compared it to other known structures on a nearly atom-by-atom basis.

This enabled them to predict which one of the more than 100 amino acids in the sensory part of the receptor is responsible for sensing the precise oxygen concentration that the bacterium needs for nitrogen fixing.

Using conventional genetic techniques, this would have taken a significant amount of time -- but using computers made the process much quicker.

"Partnering with Igor provided us great insight," said Professor Alexandre.

"We would not have been able to fully understand how this receptor works without him."

"We see now that bacteria are, in their way, big thinkers, and by knowing how they 'feel' about the environment around them, we can look at new and different ways to work with them."

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No Sex Please, We're Ants:
Female Insects That Reproduce Without Males
by Simon Magus

US and Brazilian researchers have identified a type of ant that has eliminated the need for males to reproduce.

It is estimated that ants of the species Mycocepurus smithii have thrived without sexual reproduction for at least one million years.

"Animals that are completely asexual are relatively rare, which makes this is a very interesting ant," says Christian Rabeling, an ecology, evolution and behaviour graduate student at The University of Texas at Austin.

"Asexual species don't mix their genes through recombination, so you expect harmful mutations to accumulate over time and for the species to go extinct more quickly than others."

"They don't generally persist for very long over evolutionary time."

Mycocepurus smithii is a common species of fungus-gardening ants, which is widely distributed throughout Latin America and relies on a symbiotic fungus for food.

Previous studies of the ants pointed toward the ants being completely asexual.

Anna Himler, a graduate student at The University of Texas at Austin, showed that the ants reproduced in the lab without males -- no amount of stress induced the production of males.

Formerly it was thought that specimens of male ants collected in Brazil in the 1960s were males of M. smithii.

Rabeling analysed these samples and determined that the males were in fact of the species Mycocepurus obsoletus, a closely related fungus-gardening ant that does reproduce sexually.

He also dissected reproducing M. smithii queens from Brazil -- their sperm storage organs were completely empty.

Rabeling and his colleagues estimate the ants could have first evolved within the last one to two million years -- a very young species given that the fungus-farming ants evolved 50 million years ago.

He is now using DNA analysis to study the evolution of the fungus-gardening ants.

It is hoped that this will determine a more accurate date for the change in M. smithii that led to them dispensing with males altogether.

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Blue Sky Research:
US Government Invests in Flying Car Development
by Sir Thomas More

Bubble Jam reported in 2007 about flying cars set to go into production this year -- yet our skies are notably devoid of Blade Runner-style personal aircraft.

Now the US government is hoping to succeed where the private sector has failed so far by funding research into the long-awaited flying car.

Initial funding of US$2 million is being provided by Darpa, the defence research agency responsible for the technology behind the Internet.

Darpa have christened the programme 'Transformer' -- the intended result being a transportation vehicle that can drive and fly but also carry up to four people.

The stated intention of the Transformer initiative is to enable soldiers to avoid water, difficult terrain, and road obstructions as well as IED and ambush threats.

Whilst US$2 million may seem like a derisory amount, it is hoped that more funding will become available as interest develops in the initiative.

To that end, Darpa are hosting a workshop day this month for prospective contractors.

Darpa have not disclosed if the programme has been named for the Transformers line of toys -- but the similarity has been noticed by some.

"It would only make sense to dub the first prototype vehicle Optimus Prime when -- and if -- Darpa gets there," said Mike Lysaght, correspondent for Edmunds Inside Line.

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Night of the Living Dead:
'Lifeless' Prions Capable of Evolving
by Simon Magus

Scientists have determined that prions, 'lifeless' infectious proteins devoid of DNA, are capable of Darwinian evolution.

Prions (short for proteinaceous infectious particles) occur naturally in the human body and generally do not cause any health issues.

But 'mis-folded' prions are associated with over 20 diseases in humans and animals, including mad cow disease and its human strain vCJD -- all are untreatable and fatal.

Previous thinking on Darwinian evolution has assumed that changes in nucleic acid sequences, whether that is DNA or RNA, brings about the mutations that enable evolutionary variation.

But prions noticably lacking in nucleic acid still evolve in the same way as other infectious micro-organisms.

"On the face of it, you have exactly the same process of mutation and adaptive change in prions as you see in viruses," said study leader Dr Charles Weissmann, head of The Scripps Institute 's Department of Infectology in Florida.

"This means that this pattern of Darwinian evolution appears to be universally active."

"In viruses, mutation is linked to changes in nucleic acid sequence that leads to resistance."

"Now, this adaptability has moved one level down -- to prions and protein folding -- and it's clear that you do not need nucleic acid for the process of evolution."

"It was generally thought that once cellular prion protein was converted into the abnormal form, there was no further change."

"But there have been hints that something was happening."

"When you transmit prions from sheep to mice, they become more virulent over time."

"Now we know that the abnormal prions replicate, and create variants, perhaps at a low level initially."

'But once they are transferred to a new host, natural selection will eventually choose the more virulent and aggressive variants."

Although prion-related diseases are currently untreatable, the findings may indicate new avenues of research.

Future therapies may try to limit the production of the naturally occuring prions before they can mutate rather than try to target the already abnormal prions.

"It will likely be very difficult to inhibit the production of a specific natural protein pharmacologically," said Dr Weissmann said.

"You may end up interfering with some other critical physiological process, but nonetheless, finding a way to inhibit the production of normal prion protein is a project currently being pursued in collaboration with Scripps Florida Professor Corinne Lasmezas in our department."

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Dream Come True:
Meteorite Crater Found Using Aboriginal Dreamtime Story and Google Earth
by Simon Magus

An Australian researcher has discovered a meteorite impact crater with the help of ancient Aboriginal stories about stars that fell to earth -- as well as some assistance from Google Earth.

"Indigenous Australians tell lots of stories about stars falling out of the sky with a noise like thunder -- and one of the stories gave a location in the Northern Territory," said Macquarie University PhD candidate Duane Hamacher, a researcher of Aboriginal astronomy at the Department of Indigenous Studies.

"I also decided to look at known impact craters in Australia and see if they had associated dreaming stories that attributed their origins to cosmic impacts -- and some did."

Hamacher managed to locate a bowl-shaped crater at Palm Valley, around 130 miles south-west of Alice Springs.

"I searched for it on Google Earth, but when I really found something looking like a crater I couldn't believe it."

"I was very hesitant with excitement as I thought I would look like an idiot if it was just something simple -- but it wasn't."

"It was a crater."

Geological investigation of the crater has yielded physical evidence that strongly indicates its origins in a meteorite impact.

"We found shocked quartz, which is only produced by a substantial impact and its presence in the rock samples and the morphology of the structure are the major indicators that Palm Valley is a crater," said Hamacher.


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"There is no other way to explain the structure's morphology than as a cosmic impact."

"It couldn't have been erosion and there is no volcanic activity in the area."

Although some stories could be explained as simple eyewitness accounts, many meteorite impacts occurred long before known history -- indicating that Aboriginal astronomy may be more sophisticated than hitherto suspected.

"Lots of Aboriginal Dreamtime stories are associated with craters, meteorites and cosmic impacts and although some craters are millions of years old and people would not have been able to witness the impact, it seems as if traditional dreaming stories know about the crater's origin," Hamacher said.

"We found stories with descriptions of cosmic impacts and meteorite falls related to places in Arnhem Land -- we assume there are more meteorite craters out there and science doesn't even know about their existence yet."

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It's Their Fault:
Tbe Sun and the Moon Affect The San Andreas Fault
by Sir Thomas More

A new study shows that microgravity from the sun and the moon seems to have a profound effect on the San Andreas Fault -- suggesting that the rock 15 miles below is lubricated with highly pressurised water that allows it to slip easily.

"Tremors seem to be extremely sensitive to minute stress changes," said co-author Professor Roland Bürgmann of the UC Berkeley faculty of earth and planetary science.

"Seismic waves from the other side of the planet triggered tremors on the Cascadia subduction zone off the coast of Washington state after the Sumatra earthquake last year, while the Denali earthquake in 2002 triggered tremors on a number of faults in California."

"Now we also see that tides -– the daily lunar and solar tides -– very strongly modulate tremors."

It is this extreme sensitivity to stress that lead researcher to conclude that highly pressurised water underground was acting as a lubricant.

"The big finding is that there is very high fluid pressure down there, that is, lithostatic pressure, which means pressure equivalent to the load of all rock above it, 15 to 30 kilometers (10 to 20 miles) of rock," said co-author and seismologist Robert Nadeau of the Berkeley Seismological Laboratory.

"Water under very high pressure essentially lubricates the rock, making the fault very weak."

UC Berkeley seismologists began looking for tremors five years ago in seismic recordings from the Parkfield segment of the San Andreas Fault.

Using eight years of tremor data, researchers correlated tremor activity with the effects of the sun and moon on the crust and with the effects of ocean tides, which are driven by the moon.

Althogh tidal activity is not known to cause quakes directly, it has been known to cause clusters of deep tremors.

Researchers are still trying to develop a coherent model to explain the behaviour of the San Andreas Fault.

"These tremors represent slip along the fault 25 kilometers (15 miles) underground, and this slip should push the fault zone above in a similar pattern," Professor Bürgmann said.

"But it seems like it must be very subtle, because we actually don't see a tidal signal in regular earthquakes."

"Even though the earthquake zone also sees the tidal stress and also feels the added periodic behaviour of the tremor below, they don't seem to be very bothered."

But Nadeau emphasises: "It is certainly in the realm of reasonable conjecture that tremors are stressing the fault zone above it."

"The deep San Andreas Fault is moving faster when tremors are more active, presumably stressing the seismogenic zone, loading the fault a little bit faster."

"And that may have a relationship to stimulating earthquake activity."

Nadeau is certainly encouraged by the new study and feels that more research is warranted.

"There is still all lot to learn about tremor and earthquakes in fault zones."

"The fact that we find tremors adjacent to a locked fault, like the one at Parkfield, makes you think there are some more important relationships going on here, and we need to study it more."

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All That Glisters:
The Revolutionary Glitter-Sized Solar Cell
by Simon Magus

Scientist at Sandia National Laboratories in Albuquerque have developed a new technique for creating tiny solar cells. These glitter-sized cells could be embedded into a flexible substrate and used in a variety of applications.

"Eventually units could be mass-produced and wrapped around unusual shapes for building-integrated solar, tents and maybe even clothing," said Greg Nielson, lead investigator at Sandia National Laboratories.

The silicon cells are manufactured using existing microelectronic and microelectromechanical systems (MEMS) techniques -- similar to those used to create components such as computer processors and the accelerometers that allow handheld devices to detect motion.

By choosing Mems as the manufacturing process for the cells, researchers believe that they could be integrated with a variety of electronic components as well as battery capacity.

"Photovoltaic (PV) modules made from these microsized cells for the rooftops of homes and warehouses could have intelligent controls, inverters and even storage built in at the chip level," said Sandia field engineer Vipin Gupta."

"Such an integrated module could greatly simplify the cumbersome design, bid, permit and grid integration process that our solar technical assistance teams see in the field all the time."

Traditional PV technology makes it difficult to generate power economically -- but the microsized cells could be the solution to that problem.

"One of the biggest scale benefits is a significant reduction in manufacturing and installation costs compared with current PV techniques," said Sandia researcher Murat Okandan.

As well as being easier to manufacture, these tiny cells have other advantages over existing PV technology.

"The shade tolerance of our units to overhead obstructions is better than conventional PV panels because portions of our units not in shade will keep sending out electricity where a partially shaded conventional panel may turn off entirely," said Nielson.

The new cells are 10 times thinner than conventional 6 inch square cells, yet they have about the same efficiency.

"So they use 100 times less silicon to generate the same amount of electricity," Okandan said.

"Since they are much smaller and have fewer mechanical deformations for a given environment than the conventional cells, they may also be more reliable over the long term."

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It's Raining Rain Men:
Autism in US Children on the Rise
by Simon Magus

Researchers have discovered that the rate of autism amongst US 8-year-olds is on the rise.

The rate of autistic spectrum disorders jumped 57% to one in 110 over a four-year period.

Whilst the study shows that boys are more susceptible that girls, there is still a lack of explanation for the leap in diagnoses.

"This is a dramatic increase in the number of kids classified as autistic or documented on the spectrum of similar disorders," said Dr Beverly Mulvihill, University of Alabama at Birmingham (UAB) associate professor of public health and co-author on the study.

"It is not entirely clear what is causing the rise, but we know major collaborative efforts are needed to improve the understanding and lives of people and families impacted."

Data for the study was provided by the Autism and Developmental Disabilities Monitoring Network.

The group collects information on new diagnoses of 'autism spectrum disorder' (ASD) from 11 partner organisations in Alabama, Arizona, Colorado, Florida, Georgia, Maryland, Missouri, North Carolina, Pennsylvania,

ASD is an term used to describe three distinct types of condition that can be labelled as 'autism'; classic autism, Asperger's syndrome and atypical autism.

The study also found that gender seems to be a factor in autism -- boys are 4.5 times more likely than girls to have ASD, a result also found in previous studies.

"It still is not clear why males more frequently are affected," said Dr Martha Wingate, UAB assistant professor of public health and study co-author.

"One thing we know for sure is that more research is needed to quantify the effects of single or multiple factors such as diagnosis patterns, inclusion of milder cases and other components."

But not all experts in the field are convinced that there is a significant rise in ASD diagnoses amongst children.

Dr Max Wiznitzer, paedriatic neurologist at Rainbow Babies & Children's Hospital in Cleveland, Ohio, believes that many children are being incorrectly labelled as autistic.

He points out that 54% of children in the study were diagnosed with ASD, meaning that over half did not meet the criteria.

"This suggests that over-diagnosis is occurring in the population," Dr Wiznitzer said.

The report contained evidence from parents who suspected autism in their children before the age of two.

Parents found that they would have to wait up to three years before they could get an official diagnosis.

"That is...too late," said Dr Wiznitzer.

"We need to do a better job of identifying children earlier on."

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Once in a Blue Moon:
Two Full Moons in One Month
by Simon Magus

bluemoon.jpgEvery year normally has twelve full moons. but every two or three years there is an extra moon.

For centuries, this has become known as a blue moon and New Year's Eve happens to coincide with it this year.

How this name came about is a mystery -- especially as the light of the moon is not pure white but slightly blue.

Blue moons happen due to the mismatch between the lunar calendar and solar calendars.

This means in one solar year with 12 full moons, there are around 11 extra days. Every two or three years, these days accumulate to result in two full moons in one calendar month.

Although the exact reason for naming them blue moons is obscure, the convention is part of an old English tradition of giving each full moon in the year a name.

The first moon of the year was the Old Moon, followed by the Wold Moon, Lenten Moon, and so on.

In recorded history, the first known reference to a blue moon comes from a proverb recorded in 1528:

If they say the moon is blue / We must believe that it is true.

It was later that the phrase 'once in a blue moon' was coined to describe an event that was unlikely to happen.

Although blue moons happen every few years, rare atmospheric conditions can cause the moon to actually appear blue,

Particles of ash as emitted by the Krakatoa volcano in the 19th century can scatter the light reflected off the moon -- depending on the size of the particles, the light can take on a variety of hues.

This year's blue moon does have the distinction of being a rarity -- these bonus full moons only coincide with the New Year once every two decades.

Such a festive occasion deserves an appropriate drink -- how about some Blue Moon, a delicious Belgian-style wheat beer brewed in the USA?

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Cheers!:
Genetics Reveal Evolution Of Lager Yeasts
by Simon Magus

lager.jpgGeneticists have analysed the DNA of yeasts used to brew lager -- they have discovered that they evolved as a result of two different strains combining to make the drink we know today.

"These long-ago brewers were practicing genetics without even knowing it," said Professor Gavin Sherlock of Stanford University School of Medicine.

"They've given us a very interesting opportunity to look at a relatively young, rapidly changing species, as well as some very good beer."

The story of lager begins with medieval Bavarians who forbade the brewing of beer in the summer months due to spoilage.

They chose instead to brew using ale yeast in the winter months -- colder temperatures inhibited the ale yeast and allowed hybridisation with another strain that thrived in the cold.

Analysis of lager yeast DNA reveals that hybridisation occurred not once but twice.

"It's possible that the ale strain provides a certain flavour profile, while the second strain conferred the ability to ferment at cooler temperatures," said Dunn.

"Mixing them together is a nice way for the yeast to double its genetic options."

Looking at the genetic research into lager yeast provides an insight into the history of brewing in Europe over the last 500 years.

One lineage is tied to the Carlsberg breweries in Denmark along with several breweries in the Czech Republic.

The other line is associated with breweries in the Netherlands, including Heineken.

By careful of analysis of how lager yeast's genetic profile has changed over the years, scientists can better determine what genetic traits please drinkers.

"When we look at the genes that have either been lost or amplified in copy number, we can make the case that some of them could be related to brewing," said Professor Sherlock.

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Calciyummy:
Could We Have Calcium Taste Buds?
by Simon Magus

housemouse.jpgScientists have found that mice have receptors to detect the taste of calcium -- which could also point the way to a similar discovery in humans.

"People don't consume as much calcium as nutritionists would like, and one reason for this is that foods high in calcium don't taste good to many people," said Dr Michael G. Tordoff in a presentation to the 236th National Meeting of the American Chemical Society.

"Tweaking its taste could encourage a calcium-deficient population to consume more of this key nutrient."

"By understanding how calcium is detected in the mouth, we can either make it easier to consume by reducing its bad taste or even make pharmacological agents that make it taste better."

Researchers at Monell Chemical Senses Center in Philadelphia discovered that the taste of calcium is detected by two distinct receptors on the mouse's tongue.

One is a calcium-sensing receptor called CaSR, also found in the parathyroid glands, kidney, brain and gastrointestinal tract.

"We didn't know it was on the tongue before," Dr Tordoff said.

The other is a receptor known as T1R3, a component of the 'sweet-taste' receptor -- a finding that researchers described as 'very unexpected.'

Dr Tordoff and his colleagues looked at the calcium preferences of 40 different strains of mice.

"Most mice dislike calcium, but we found a very unusual strain that drinks it avidly," he said.

"By comparing the genes of this strain with other strains, we were able to identify the two calcium taste genes."

Now they must see if humans have a similar capacity.

"It remains to be seen if what we have discovered in mice -- the existence of two calcium taste genes -- holds true for humans," said Dr Tordoff.

"We know people have the sweet-taste gene, Tas1r3, and the gene involved with the calcium-sensing receptor, CaSR."

"We don't know if we have the same forms of genes as the mice have, but it seems pretty likely they have the same function."

But what does calcium actually taste of?

"Calcium tastes calciumy," Dr Tordoff said.

"There isn't a better word for it."

"It is bitter, perhaps even a little sour."

"But it's much more because there are actual receptors for calcium, not just bitter or sour compounds."

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Better Living Through Chemistry:
Magic Molecule Cleans Up The Atmosphere Naturally
by Simon Magus

ozonemodel.jpgResearchers have discovered an unusual molecule in the atmosphere that can break down pollutants and therefore prevent acid rain.

The molecule's existence was predicted over 20 years -- now scientists are discovering how it 'burns up' or oxidises pollutants, such as nitrogen compounds from factories and cars.

Pollutants that aren't processed then fall back to earth in the form of acid rain.

"The chemical details of how the atmosphere removes nitric acid have not been clear," said Professor Joseph Francisco of Purdue University.

"This gives us important insights into this process."

"Without that knowledge we really can't understand the conditions under which nitric acid is removed from the atmosphere."

"This becomes important in emerging industrial nations such as China, India and Brazil where there are automobiles and factories that are unregulated."

"This chemistry will give us insight into the extent that acid rain will be a future concern."

The newly discovered molecule has two hydrogen bonds, which allows it to form a six-sided ring structure.

Hydrogen bonds are normally weaker than other bonds between the atoms in a molecule, known as covalent bonds.

Covalent bonds are 20 times stronger than hydrogen bonds -- yet these two hydrogen bonds are strong enough to affect the atmosphere.

"We've speculated about this unusual atmospheric species for many years, and then to actually see it and learn about its properties was very exciting," said Professor Marsha Lester of the University of Pennsylvania.

"The reaction involving this molecule proceeds faster as you go to lower temperatures, which is the opposite of most chemical reactions."

"The rate of reaction also changes depending on the atmospheric pressure, and most reactions don't depend on external pressure."

"The molecule also exhibits unusual quantum properties."

Professor Lester pointed out that it was these unusual properties that left the molecule undiscovered for so long.

"This is not how we explain chemistry to high school students," she said.

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Now You See It, Now You Don't:
Practical Invisibility Is One Step Closer
by Simon Magus

invisibleman.jpeg
Scientist have found a way to use nanomaterials to bend light -- which could eventually lead to a practical way to make objects invisible.

The research effort centres on so-called metamaterials -- these are artificially engineered structures that have properties not known iin nature, such as the ability to reverse light.

"We are not actually cloaking anything," said Jason Valentine, one of the researchers working on the project.

"I don't think we have to worry about invisible people walking around any time soon."

"To be honest, we are just at the beginning of doing anything like that."

Two different type of metamaterial are being investigated -- one is a fishnet of metal layers, while another uses tiny silver wires, both at the nanoscale level.

Using these metamaterials, researchers have created a scenario where a physical substance has a 'negative refractive index' -- changing the way that it is percieved.

"In naturally occurring material, the index of refraction, a measure of how light bends in a medium, is positive," said Valentine.

"When you see a fish in the water, the fish will appear to be in front of the position it really is."

"Or if you put a stick in the water, the stick seems to bend away from you."

But Valentine pointed out that negative refraction leads to some unusual effects.

"Instead of the fish appearing to be slightly ahead of where it is in the water, it would actually appear to be above the water's surface," he said.

"It's kind of weird."

For now, the technology could be used to improve optical devices -- leading to better microscopes that can observe a living virus in situ.

"However, cloaking may be something that this material could be used for in the future," Valentine said.

"You'd have to wrap whatever you wanted to cloak in the material."

"IIt would just send light around."

"By sending light around the object that is to be cloaked, you don't see it."

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Not So Cool:
Big Tobacco Uses Menthol To Hook Young Smokers
by Simon Magus

marlboro-menthol.gifA new study claims that tobacco companies manipulate menthol levels in brands targeted at young people -- researchers believe making the smoke more palatable will result in them becoming hooked.

"Menthol stimulates the cooling receptors in the lung and oral pharynx," said Professor Gregory Connolly Howard of the Harvard School of Public Health (HSPH), co-author of the paper.

"It makes smoking easier."

Menthol appears as an additive in around 90% of cigarettes manufactured in the US -- but only a third of these brands are explicitly marketed as mentholated.

"For decades, the tobacco industry has carefully manipulated menthol content not only to lure youth but also to lock in lifelong adult customers," said co-author Professor Howard Koh, associate dean of Public Health Practice at HSPH.

Yet the tobacco industry denies that there is any strategy to deliberately hook young smokers.

"There is very little direct relevant data that shows menthol affects initiation," said David Sylvia, a spokesperson for Philip Morris, makers of Marlboro amongst others.

Sylvia was adamant that their products 'were not designed for nor marketed to underage smokers.'

The study also looked at the ethnicity of adult smokers -- they found that African Americans were more likely to smoke menthol cigarettes than any other group.

"This is another example of the cynical behaviour of the tobacco industry to hook teens and African Americans to a deadly addiction," said Professor Connolly.

"This is after the industry told the American public it had changed its marketing practices."

A bill currently before Congress would give the US Food & Drug Administration (FDA) powers to regulate additives such as menthol -- at present, they have no authority to act.

"The FDA bill provides the vehicle to end the hypocrisy and save the lives of the young and a targeted minority group," Professor Connolly said.

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Sew Clever:
The Minature Sewing Machine For DNA
by The Mullah

paralleltelomerequadruple.pngScientists have developed a microscoping sewing machine that can be used to sew strands of DNA together.

Existing DNA manipulation techniques use chemicals, but long strands can often break.

The new process, developed by Kyohei Terao from Kyoto University, and his colleagues from the University of Tokyo, uses microscopic bobbins and hooks controlled by lasers to delicately hold and straighten a DNA strand.

The bobbins and hooks are made from a polymer called SU-8 photoresist that doesn't bind to DNA, thereby preventing damage.

The laser acts in effect as set of 'optical tweezers'.

"When a DNA molecule is manipulated and straightened by microhooks and bobbins, the gene location can be determined easily with high-spatial resolution," said Terao.

The technique isn't very different traditional sewing and knitting, apart from the scale.

"The microhooks and bobbins were inspired by manipulation of thread using our fingers," Terao said.

The breakthough was described as 'an excellent idea to fabricate unique microtools that enables us to manipulate a single giant DNA molecule' by Yoshinobu Baba, a researcher into biological microdevices at Nagoya University, Japan.

He believes that the process will eventually be useful for DNA sequencing and molecular electronics, amongst other applications.

Other scientists in the field also welcomed the development, but noted that real-world applications for the technique are a long way off.

"This is an impressive piece of microengineering," said Edwin Cuppen of the Netherlands Institute for Developmental Biology in Utrecht.

"However, relevant applications are still pretty far down the road -- there will be a major challenge for applying this to complex genomes such as those of vertebrates and man."

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Too Good To Be True?:
Turning Farm Waste Into Crude Oil
by Simon Magus

spc_logo.gifA US company are touting a breakthrough that could end dependence on fossil fuels -- their process can turn farm waste such as rice and cottonseed hulls into a crude oil that can be refined into a variety of petrochemicals.

"Our biggest problem is that we are too good to be true," said John Rivera, chairman of Sustainable Power Corporation.

"We can literally replace every gallon of gasoline, diesel and jet fuel in the United States using just 12 per cent of the waste by-products in the country."

Rivera has spent 21 years and US$31 million (£15.6 million) developing the secret process.

A reactor is filled with farm waste such as hulls and cracked soy beans -- what results is a biogenic crude oil dubbed Vertroleum that Rivera claims is superior to crude from fossil sources.

Rivera contends that products made from Vertroleum burn at near 100 per cent efficiency -- minimising pollution and waste heat.

"Anyone you tell about this will call you a liar," said Rivera.

What is even more unbelievable is that the sole by-product from the process is an organic fertiliser.

"The fertiliser is worth about 15 cents (8p) per pound, but the fuel by-product is worth much more," said Gerald Brent, general manager of Sustainable Power Corporation.

Sustainable Power Corporation are now developing a new facility that will boast 400 reactors -– each producing 6,000 gallons of crude daily -– and a Vetroleum-powered 500 megawatt energy plant, capable of supplying 400,000 homes with power.

Brent hopes that the facility will be ready within the next 12 to 18 months.

"We have to build this from the ground up," he said.

"This is just our proof-of-concept."

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Cheesy:
Dairy Farmers' Mail-In Milk Protest
by Simon Magus

milkglass.jpgGerman dairy farmers are protesting against low prices for their produce by mailing thousands of litres of milk to the EU commissioner for agriculture -- officials are having to contend with an influx of exploding cartons as the milk ferments in the post.

About 10,000 litres of milk have been sent to EU Agriculture Commissioner Mariann Fischer Boel in the last two weeks.

"Unfortunately, a lot of the milk had gone off and some of the cartons had burst," said an unnamed Commission official.

"So it was all a bit smelly and messy."

Rather than throw away milk that is worth next to nothing, they came up with the novel idea of posting it to the EU Commission as a way of drawing attention to their plight.

"We have to, unfortunately, throw it away," said Michael Mann, spokesperson for Commissioner Boel.

"We are conscious of their concerns, but we don't think it's a good idea and they should send it to a good cause."

World prices for milk have risen -- but this has not translated into higher prices for German farmers, one reason why they went on strike in May.

During the dispute they fed milk to calves in public and poured it on fields as fertiliser.

As a result, the supermarket chain Lidl raised milk prices.

The latest protest has been prompted by the EU's decision in April to raise milk quotas by 2% to curb rising prices and meet growing demand.

Boel has pleaded with the farmers to find a better way to demonstrate their anger.

"If you would like to keep on sending milk, I can suggest that it would be better put to a good use in your local area," she said.

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Mind Over Matter:
Mind's Eye Affects How We See The World
by The Mullah

eye.jpgResearchers have discovered that our imaginations can drastically affect how we perceive the world -- mental imagery can influence how we see a particular situation.

"We found that imagery leads to a short-term memory trace that can bias future perception," said Joel Pearson, lead author of the study and research associate at the Vanderbilt Department of Psychology.

"This is the first research to definitively show that imagining something changes vision both while you are imagining it and later on."

"These findings are important because they suggest a potential mechanism by which top-down expectations or recollections of previous experiences might shape perception itself."

The findings of the study show that the process can happen instantaneously.

"You might think you need to imagine something 10 times or 100 times before it has an impact," said Frank Tong, co-author of the study and associate professor of psychology.

"Our results show that even a single instance of imagery can tilt how you see the world one way or another, dramatically, if the conditions are right."

Previous research into vision has been stymied by the subjective nature of how we perceive imagery.

"It has been very hard to pin down in the laboratory what exactly someone is experiencing when it comes to imagery, because it is so subjective," said Tong.

"We found that the imagery effect, while found in all of our subjects, could differ a lot in strength across subjects."

"So this might give us a metric to measure the strength of mental imagery in individuals and how that imagery may influence perception."

The study may help to settle a long-standing debate in the field -- is vision a literal representation of what is there or is it something more abstract?

"More recently, with advances in human brain imaging, we now know that when you imagine something parts of the visual brain do light up and you see activity there," said Pearson.

"So there's more and more evidence suggesting that there is a huge overlap between mental imagery and seeing the same thing."

"Our work shows that not only are imagery and vision related, but imagery directly influences what we see."

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I Should Cocoa:
Mars To Map Chocolate Genome
by Simon Magus

chocolate.jpgMars are teaming up with IBM and the US government to map the genome of the cocoa plant -- they hope to stop fungal diseases that destroy 14% of the world's cocoa crop each year at a cost of US$700 million (£350 million).

"Mars saw the potential this research holds to help accelerate what farmers have been doing since the beginning of time with traditional breeding, ultimately improving cocoa trees, yielding higher quality cocoa and increasing income for farmers," said Dr Howard-Yana Shapiro, global director of plant science for Mars.

"The genome is the road map."

"It's our responsibility to the farmers to do this work."

Results of the five year project will be freely available in the public domain through the Public Intellectual Property Resource for Agriculture.

As well as investing $10 million in a joint project with IBM to use supercomputers in the effort, Mars will also work closely with scientists from the US Agriculture Department (USAD).

"Once we have the whole genome, they'll be able to go in and look at all the genes they're interested in," said Ray Schnell, a geneticist at USAD's subtropical horticulture research station in Florida.

"They'll all be interested in flavour genes."

Participants in the project were keen to talk up the potential benefits of the project to Africa -- the continent produces around 70 percent of the world's cocoa.

"This collaboration is an opportunity for us to apply our computational biology and supercomputing expertise to help improve an economically important agricultural crop," said Dr Mark Dean, vice president of Technical Strategy and Global Operations at IBM Research.

"We look forward to helping the agricultural community in Africa, and in other emerging markets."

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Instant Courage:
Hormone Could Lead To Drug Cure For Shyness
by Simon Magus

shy.jpgPeople seeking a dose of confidence may not need to indulge in the Dutch courage given by alcohol -- scientists claim that a benign and non-addictive cure for shyness based on the hormone oxytocin is on the horizon.

Oxytocin is a natural hormone that assists childbirth and promotes bond between mothers and babies.

Now scientists have determined that oxytocin is effective in curing anxiety, social phobias, and could even be used to alleviate the effects of autism.

"Tests have shown that oxytocin reduces anxiety levels in users," said Professor Paul Zak, a neuroscientist based at California's Claremont Graduate University.

"It is a hormone that facilitates social contact between people."

"What's more, it is a very safe product that does not have any side effects and is not addictive."

Zak tested the hormone on hundreds of patients and found that it curbed the instincts of wariness and suspicion that lead to anxiety.

“We’ve seen that it makes you care about the other person," said Zak.

"It also increases your generosity towards that person."

"That’s why [the hormone] facilitates social interaction.”

Oxytocin could provide a lifeline to those caring for people with autism, a notoriously difficult condition to treat.

Researchers in New York found that oxytocin reduces the adverse effects of autism such as anxiety.

“Oxytocin does not cure autism, but it does reduce the symptoms,” Professor Zak said.

“So there is a reduction of anxiety in autistic patients, and the oxytocin can induce them to do things like make eye contact with other people and look at their faces -- something autistic people find hard to do.”

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Oyster Cracked Open:
Popular Smartcard Platform Is Insecure
by Simon Magus

chipkaart.jpgResearchers have revealed that smartcards using Mifare Classic chips can be easily cloned -- threatening the security of hundreds of buildings that use the cards, as well as allowing Oyster users to top-up their cards fraudulently.

Dr Bart Jacobs of Radboud University in the Netherlands used a laptop to clone a smartcard used to enter a public building in the country.

"An employee can be cloned by bumping into that person with a portable card reader," said Dr Jacobs.

"The person whose identity is being stolen may then be completely unaware that anything has happened."

"At the technical level there are currently no known countermeasures."

The Dutch government was so alarmed to hear of the breach that they posted armed guards at all buildings using the smartcards -- the guards will remain until the Mifare smartcards are replaced.

"We take this extremely seriously," said a spokesperson for the Dutch Interior Ministry.

"It's a national security issue."

"We're in the process of replacing the cards of all 120,000 civil servants at central government level at a cost of about €5 (£4) for each card."

Jacobs also travelled to London, where he used the same technique to ride around the city's public transport system for free -- the Oyster smartcard used in London also features Mifare chips.

He again used a laptop to reverse-engineer the algorithm used in the Mifare chip.

Transport for London (TfL) played down the significance of the discovery.

"This was not a hack of the Oyster system," said a spokesman for TfL.

"It was a single instance of a card being manipulated."

The manufacturers of the Mifare chip, NXP Semiconductors (a spin-off from Royal Dutch Philips), confirmed that they are fully aware of the issues around the compromised platform.

"We are aware that the Dutch researchers have reverse engineered the algorithm and we are taking this issue very seriously," said a spokesperson for the company.

"We've informed all of our system integrators and advised them to closely assess their systems."

"We're talking to the guys at Radboud University and have identified various counter measures."

Experts are unambiguous about the steps that now need to be taken.

"You only have to walk down the street to see contactless access control systems everywhere," said Adam Laurie, a computer security researcher.

"It used to be a magnetic strip, now it's a card held up to a reader on the wall."

"A large percentage of these will have Mifare technology and are very vulnerable to attack."

"They should all be replaced."

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Smell The Coffee:
Coffee Drinkers May Live Longer
by Simon Magus

coffeecup.jpgA new study shows that drinking two or three cups of coffee does not have detrimental effects on health -- in fact, it may prolong life expectancy.

"Coffee drinkers can be reassured that coffee does not increase their risk of death," said lead author Dr Esther Lopez-Garcia of the University of Madrid.

The study looked at the risk of mortality for women who consumed four to five cups a day against those who didn't drink coffee.

Risk of death due to all causes was 26 per cent lower for the five-a-day coffee drinkers.

Women who drank two to three cups of coffee a day had a 17 per cent lower risk.

Whilst men also showed similar benefits, the difference was not deemed to be statistically significant.

For both genders, there was no greater or lower risk of death from cancer among coffee drinkers.

"Coffee consumption has been linked to various beneficial and detrimental health effects, but data on its relation with death were lacking," said Dr Lopez-Garcia.

"Regular coffee consumption was not associated with an increased mortality rate in either men or women."

The study is the latest in a long line that have rehabilitated foods that were dismissed as unhealthy.

"It's also happened with other foods and nutrients, for example with fats," Dr Lopez-Garcia said.

"They used to be bad -- now it has been discovered they are not so bad, even can be good for our health."

The report states that coffee needs further investigation for its potential benefits to health.

"The possibility of a modest benefit of coffee consumption on all cause and cardiovascular disease mortality needs to be further investigated," it says.

But Dr Lopez-Garcia is warning people with certain medical conditions to be careful about taking up coffee as a result of the study.

"We need more research," she said.

"We are very cautious when we say coffee is not bad because for people with cardiovascular disease, hypertension and insomnia, clearly it's not a good idea to start drinking coffee."

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Through The Keyhole:
Who Lives In A Pyramid Like This?
by The Mullah

menkauhor.jpgThe mystery of the Headless Pyramid, first described by Lepsius in the 19th century, may have been solved. Archaeologists believe that the badly eroded pyramid south of Cairo belongs to the Fifth Dynasty Pharaoh Menkauhor.

German archaeologist Karl Richard Lepsius discovered the Headless Pyramid in 1842 -- but it was lost beneath the sands of Saqqara, a royal burial site near Cairo.

"After Lepsius the location of the pyramid was lost and the substructure of [the] pyramid never known," said Zahi Hawass, secretary general of Egypt's Supreme Council of Antiquities.

"It was forgotten by people until we began to search this area and a hill of sand, maybe 25 feet {7.6 metres) high."

"Now we are sure that this pyramid is of a style of a pyramid of Dynasty V and belongs to a king called Menkauhor."

"There were missing pyramids of the kings, and this is one of them."

Menkauhor ruled Egypt in the 24th century BC and is the only Fifth Dynasty ruler whose pyramid has not been identified so far.

Archaeologists have not found inscriptions with the name of the pharaoh so far -- the attribution is based on architectural features.

As well as large red granite blocks at the entrance to the burial chamber, the lid of the sarcophagus is made of grey schist -- all characteristic of the Old Kingdom.

"The material of this sarcophagus was never used in the Middle Kingdom," Hawass said.

"The Middle Kingdom pyramids...have complicated corridors until you reach the burial chamber."

"Without discovering any inscription I tell you this is Old Kingdom."

"The substructure is exactly Dynasty V."

Hawass will continue investigating Saqqara -- he believes that the only one third of the site has been fully investigated.

"You never know what secrets the sands of Egypt hide," he said.

"I always believe there will be more pyramids to discover."

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Cock Of The Walk:
Painted Birds Pull The Girls
by Simon Magus

safran.jpgScientists have discovered than darkening the breast feathers of male barn swallows makes them more attractive to females -- they mate more often than their lighter feathered fellows.

The study used a simple marker pen costing $6 (£3) to darken the rust-coloured breast feathers of the New Jersey barn swallow -- making lighter coloured birds look like those naturally darkest.

As a result, their biochemistry began to change -- they started producing more testosterone,

"The experimental manipulation didn't just improve their looks in the eyes of the females, it actually changed their body chemistry," said Professsor Rebecca Safran, lead author and an evolutionary biologist based at the University of Colorado in Boulder.

"A male barn swallow can't look in a mirror and assess his social status."

"But if he flies into a group of other swallows, the birds will quickly assess it for him and give him a sense of where he fits in."

What surprised researchers was that the changes in testosterone manifested one week after the birds were marked -- a surprisingly short period of time for such a drastic change.

"Other females might be looking at them as being a little more sexy, and the birds might be feeling better about themselves in response to that," said Professor Kevin McGraw, co-author and a fellow evolutionary biologist based at Arizona State University.

Safran paraphrased Shakespeare to draw a parallel between avian and human behaviour.

"It's the 'clothes make the man' idea," she said.

"It's like you walk down the street and you're driving a Rolls Royce and people notice."

"And your physiology accommodates this."

But shr thinks that we should be wary of making too many comparisons between birds and humans.

Barn swallows are 'socially monogamous and genetically promiscuous, same as humans,' she said.

"There are some interesting parallels, but we do need to be careful about making them."

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Forever Blowing Bubbles:
Nanoscale Bubbles Could Revolutionise Food
by The Mullah

bubble.jpgResearchers have found a way to improve the texture of foods such as ice cream that rely on tiny air bubbles -- they have found a way to create nanoscale bubbles that can last up to 12 months without popping.

Harvard researchers were inspired by a talk given by Dr Rodney Bee, a chemist with Unilever -- the company is a major producer of ice cream, amongst other food products.

Bee showed how esing a simple kitchen mixer, he had managed to create ice cream with bubbles one micrometer in size.

"Small bubbles on that scale never last because of surface tension -- they instantly disappear." said Professor Howard Stone of Harvard's School of Engineering and Applied Sciences (SEAS).

"What Rodney showed on that screen was extraordinary,"

"I asked him how he created his foams, and he said he used an ordinary kitchen mixer."

"The next day I went out and bought a kitchen mixer for the lab."

SEAS graduate student Emilie Dressaire worked with Stone to formulate a syrupy mixture of simple sugars and water.

When the mixture was whipped, a foam was created with a crystalline structure that protected the bubbles from popping.

"The bubbles are fairly happy in it," said Dressaire.

"We were able to keep them for a year."

The bubbles could be modified for other uses, such as cosmetics or as contrast agents for ultrasound imaging.

They could even be used to replace fat molecules in food products, such as ice cream and mayonnaise.

"The lifetime is so long, which is the interesting part for industry," Dressaire said.

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Incommodious:
Space Station Toilet Is On The Blink
by Simon Magus

isstoilet.jpgAstronauts on the International Space Station are finding life in orbit to be more trying than usual -- their zero-gravity toilet has broken down and there's no backup in place.

The Russian-made toilet began malfunctioning last week, but the exact cause in unclear.

Until the problem is resolved, astronauts have been improvising by using plastic bags to deal with waste.

But their ordeal should end soon -- Nasa will launch the Discovery space shuttle this weekend with replacement parts on board,

"We will be taking some spare parts up," said Allard Beutel, spokesperson for Nasa.

"You can imagine you are having guests over and your one and only bathroom is broken."

"Clearly this is something you want to have working."

To make room for the replacement parts, Nasa are leaving behind items of non-essential cargo -- including several wrenches and a spare part for the space station's oxygen generator.

"Clearly, having a working toilet is a priority for us, so some of these things that we didn't need for the next six months or so could wait," said Scott Higginbotham, Discovery's payload manager.

Discovery's commander sounded an optomistic note as he arrived at the launch site.

"We hear it's in great shape," said Mark Kelly, referring to the shuttle's readiness for flight.

"As soon as we get a couple more spare parts that I'm sure some of you guys have heard about...we're going to be all ready to go."

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Bugs In The System:
Computer Created Using Bacteria
by The Mullah

ecoli.jpgScientists have used fragments of DNA and modified E. coli bacteria to create a new kind of living computer that could lead to better data storage and manipulation of genes.

A team from the biology and the mathematics departments of Davidson College in North Carolina and Missouri Western State University added genes to E. coli bacteria to solve a classic mathematical puzzle, known as the burnt pancake problem.

The burnt pancake problem involves a stack of pancakes of different sizes, each of which has a golden and a burnt side.

This stack must be sorted so that the largest pancake is on the bottom and all pancakes are golden side up.

Each flip reverses the order and the orientation of one or several consecutive pancakes.

The aim of the exercise is to stack them correctly in the fewest number of flips.

To solve the problem, the researchers used fragments of DNA as the pancakes.

Genes were added from a different type of bacterium to enable the E. coli to flip the DNA 'pancakes'.

A gene that made the bacteria antibiotic-resistant was also added, but only when the DNA fragments had been flipped into the right order.

The time required to reach the mathematical solution with the bacteria reflects the minimum number of flips needed to solve the burnt pancake problem.

"The system offers several potential advantages over conventional computers" says Dr Karmella Haynes of Davidson College, a lead researcher.

"A single flask can hold billions of bacteria, each of which could potentially contain several copies of the DNA used for computing."

"These 'bacterial computers' could act in parallel with each other, meaning that solutions could potentially be reached quicker than with conventional computers, using less space and at a lower cost.

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Smell To Get Well:
Incense Could Alleviate Depression And Anxiety
by Simon Magus

frankincense.jpgBiologists have discovered that inhaling the smoke from burning frankincense causes ion channels in the brain to be activated -- alleviating anxiety and depression.

Made of resin from the Boswellia plant, frankincense has not been previously been thought to have any effect on the brain.

"In spite of information stemming from ancient texts, constituents of Boswellia had not been investigated for psychoactivity," said Professor Raphael Mechoulam of the Hebrew University of Jerusalem, one of the research study's co-authors.

"We found that incensole acetate, a Boswellia resin constituent, when tested in mice lowers anxiety and causes antidepressive-like behaviour."

"Apparently, most present day worshippers assume that incense burning has only a symbolic meaning."

When administered to mice, incensole acetate affects areas of the brain involved with emotion as well as areas known to be affected by current anxiety and depression medications.

The compound activates a mammalian brain protein called TRPV3, known to play a role in the perception of warmth on the skin.

Incensole acetate's effects could point the way to an entirely new class of depression and anxiety drugs.

"Perhaps Marx wasn't too wrong when he called religion the opium of the people," said Dr Gerald Weissmann, editor-in-chief of the Federation of American Societies for Experimental Biology Journal.

"Morphine comes from poppies, cannabinoids from marijuana, and LSD from mushrooms -- each of these has been used in one or another religious ceremony."

"Studies of how those psychoactive drugs work have helped us understand modern neurobiology."

"The discovery of how incensole acetate, purified from frankincense, works on specific targets in the brain should also help us understand diseases of the nervous system."

"This study also provides a biological explanation for millennia-old spiritual practices that have persisted across time, distance, culture, language, and religion -- burning incense really does make you feel warm and tingly all over!"

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A Truffling Matter:
Climate Change Threatens Supplies Of Gourmet Fungus
by Simon Magus

truffle.jpgTruffle producers are worried that climate change is threatening stocks of the sought after delicacy.

In France, this winter's harvest comprised 20 tonnes of best quality black truffles -- half of what had been predicted.

"The bad harvest years, which used to be the exception, are becoming the norm," said Jean-Charles Savignac, President of the Federation Francaise des Trufficulteurs (FFT).

Prolonged droughts in France, Italy, and Spain -- the main truffle producing countries -- are devastating as the truffle cannot go more than three weeks without water.

Rising temperatures are also blamed for the drop in yields -- a situation that has pushed the prices up for truffles on the open market.

One kilo of black truffles can fetch as much as €1,000 (£794), three times the cost at the end of the 1990s.

Whilst high prices can be lucrative for producers, they are concerned about an uncertain future for their crops.

"There are a lot of plantations coming to maturity, but at the moment we cannot say what the future will hold for truffle production," said Jean-Pierre Audivert, President of the Departmental Federation of Perigord Truffle Producers.

Wholesalers are now trying to meet some of the shortfall by importing inferior truffles from China.

They may be similar in appearance to Europe's black truffle and cost a fraction of the price, but they are lacking in flavour -- the FFT has called on the European Union to ban imports.

Producers see their salvation in finding new ways to adapt to the weather and increase yields.

Researchers are now investigating ways in which truffles can be better protected from drought and frost.

"The idea is not to suffer, but to understand in order to react," said Jean-Marc Olivier, Director of Research at the French National Institute for Agronomical Research

"The production zones of the Mediterranean plain are on the frontline and will face further difficulties if we do not adapt."

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Archaeology:
Science Aids Resurrection Of Moore Sculpture
by Simon Magus

thearch.jpgA Henry Moore sculpture has lain dismantled for the last 12 years due to safety concerns -- but new technology may allow the piece to be reconstructed again.

The Arch was created in 1980 by Moore and is a six metre tall sculpture modelled on sheep collar bones joined together.

A project exploring the use of rock engineering techniques for cultural heritage conservation hopes that the piece could be resurrected at its original site on the banks of the Serpentine Lake.

"Rock engineering techniques are usually used for stabilisation of tunnels and rock slopes," said Dr John Harrison of Imperial College, "but the basic concepts of understanding how rock behaves when it is subjected to loads are immediately applicable to stone sculptures."

"We can now apply this knowledge to preserving some of the nation’s most important and historic artworks."

The piece was originally dismantled over concerns that it was structurally unsound -- the team needed to find out why that was the case.

As well as experts from Imperial College, assistance was also sought from Tate Galleries and Glasgow School of Art.

"We were delighted when the Henry Moore Foundation invited us to study the Arch as a subject for our research," said Dr Angela Geary from the Glasgow School of Art.

"It was a huge practical challenge, but it was very exciting and motivating to be working on such a significant real-world problem."

Rock samples were taken for testing and and laser scans of the dismantled stone blocks were used to generate 3D computer models of the sculpture for analysis.

The team concluded that the unusual shape, the poor location of the structural joints holding the blocks together, and the use of brittle travertine stone all combine to make it unsteady.

Solutions for these problems include attaching the rock legs and top section together with fibreglass and placing the structure on a base of reinforced concrete.

"The outcome is a positive one for everyone involved, and our aim is now to expand across a wide range of artefacts from armoury to pottery and painting," said Derek Pullen, Head of Sculpture Conservation at Tate Galleries.

"Our methods could remove much of the guesswork from planning conservation treatment and could become an indispensable tool in the care of collections."

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I'm Sticking With You:
Non-Stick Chewing Gum Nets £10 Million For Scientists
by Simon Magus

wrigleysgum.jpgA team of scientists from Bristol University have attracted £10 million in funding to commercialise their innovatory non-stick chewing gum.

Clean Gum is designed to rid the streets of litter and save local councils the £150 million they spend every year on removing it from pavements.

"The advantage of our Clean Gum is that it has great taste, it is easy to remove and has the potential to be environmentally degradable," said Professor Terence Cosgrove.

The key innovation is a polymer that attracts water in saliva -- this forms a thin film around the polymer which prevents it from becoming sticky.

"With this gum, you always get a film of water around it, and that's one of the reasons it's easy to remove and in some cases doesn't stick at all," Professor Cosgrove said.

The effort has been so successful that a company called Revolymer has now been spun off from the University to commercialise the research.

As well as being tested on the streets of Bristol, the gum was also stuck in the hair of the CEO's daughter.

Unlike conventional gum that has to be cut out with scissors, the non-stick gum was removed after several applications of shampoo.

“I am delighted with our progress," said Roger Pettman, CEO of Revolymer.

"In eighteen months we have converted UK technology into a commercial product significantly changing the pollution issues facing chewing gum."

“Removable, degradable chewing gum is becoming a reality."

This new approach has now yielded £2m in venture capital from Swarraton Partners and their co-investors Top Technology Ventures, the venture capital subsidiary of IP Group plc.

As part of the deal, Stephen Brooke, managing partner of Swarraton Partners, is joining the company as a non-executive director.

"I have been following the company for some time and was impressed with the speed with which it has moved from developing technology to developing products," Brooke said.

With other investments from institutions and private investors, Revolymer now has a war chest totalling £10 million.

As well as helping to commercialise Clean Gum, the company will also use the money to finance research into using polymers for detergents and drug delivery systems.

But first they have to overcome the hurdle of regulatory approval from the EU so the polymer can be used as an additive in chewing gum -- which could signal the end of a frustrating problem for local councils.

"Of all the things that end up on our streets, chewing gum is the hardest to shift," said Leith Penny, director of environment and leisure at Westminster council.

"The problem with campaigns to stop people disposing of chewing gum irresponsibly is that they do nothing to stigmatise the behaviour."

"The campaigns that did -- for drink-driving and dogs fouling the streets -- worked very well."

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A Close Shave:
Humans Came Close To Extinction 70,000 Years Ago
by Simon Magus

mitochondria.jpgA genetic survey has revealed that humans faced extinction 70,000 years ago -- the entire human race may have dwindled to a mere 2,000 as a result of climate change.

"Who would have thought that as recently as 70,000 years ago, extremes of climate had reduced our population to such small numbers that we were on the very edge of extinction," added Meave Leakey, Professor of Paleontology at Stony Brook University.

An international team studied the maternally-transmitted mitochondrial DNA from subjects in southern and eastern Africa.

Paleontology has revealed that our species originated in Africa approximately 200,000 years ago.

Previous studies using mitochondrial DNA have traced modern humans to a single 'Eve' alive at that time.

This latest study shows that that humans separated into small populations prior to the Stone Age.

One reason for this could be a series of severe droughts that struck Eastern Africa around 100,000 years ago.

When conditions improved, the isolated populations began to come together and eventually left Africa to colonise the world.

"It was only around 40,000 years ago that they became part of a single pan-African population, reunited after as much as 100,000 years apart," said Doron Behar, of the Rambam Medical Center at Haifa.

From that tiny population of 2,000 individuals, the human race has now grown to around 6.6 billion, according to the latest estimates.

"This study illustrates the extraordinary power of genetics to reveal insights into some of the key events in our species' history," said Spencer Wells, National Geographic Society explorer in residence.

"Tiny bands of early humans, forced apart by harsh environmental conditions, coming back from the brink to reunite and populate the world."

"Truly an epic drama, written in our DNA."

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Oil Be There:
Buddhists Used Oil Paints Long Before Europeans
by The Mullah

bamiyanbuddhas.jpegScientists have analysed ancient Buddhist cave paintings and found that they used oil paints hundreds of years before Europeans.

"This is the earliest clear example of oil paintings in the world, although drying oils were already used by ancient Romans and Egyptians, but only as medicines and cosmetics", said Yoko Taniguchi of Japan's National Research Institute for Cultural Properties, leader of the research team.

The researchers went to the Bamiyan region of Afghanistan -- notorious for the demolition of Buddha statues by the Taliban.

Although the caves were also targeted for destruction by the Taliban, a number of paintings on their walls survived from the 5th to 9th century AD.

An international team of scientists deployed a variety of complex techniques to analyse the paintings, including infrared micro-spectroscopy, micro X-ray fluorescence, micro X-ray absorption spectroscopy and micro X-ray diffraction.

"On one hand, the paintings are arranged as superposition of multiple layers, which can be very thin," said Marine Cotte, a scientist at the Centre of Research and Restoration of the French Museums.

"The micrometric beam provided by synchrotron sources was hence essential to analyze separately each of these layers."

"On the other hand, these paintings are made with inorganic pigments mixed in organic binders, so we needed different techniques to get the full picture."

It emerged that 12 out of the 50 caves were painted with oil paints, probably derived from walnut or poppy seed drying oils.

Apart from the oil-based paint, some of the layers were made of natural resins, proteins, gums, and occasionally a resinous, varnish-like layer.

The presence of proteins could indicate the use of hide glue or even egg.

As well as rewriting the history of art, the findings are a welcome addition to the otherwise scant knowledge of the Silk Road's artists.

"Due to political reasons, research on paintings in Central Asia is scarce," Taniguchi said.

"We were fortunate to get the opportunity from Unesco, as a part of conservation project for the World Heritage Site at Bamiyan, to study these samples and we hope that future research may provide deeper understanding of the painting techniques along the Silk Road and the Eurasian area."

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Not To Be Sniffed At:
South Korea Clones Sniffer Dogs
by Simon Magus

toppies.jpegSouth Korea's customs service has paid a biotech company to clone their best sniffer dog.

It took 300 million Korean Won (£150,000) of state funding, but the cloning has been successful.

"The project was successful," said Lim Jae-Yong, the project manager for the team working on the cloning effort.

"This is the first time that cloned dogs have been used as sniffer dogs."

Seven cloned embryos were created using cells taken from a Canadian Labrador Retriever called Chase and successfully implanted into three surrogate mothers.

Customs officials have decided to call the puppies 'Toppies', a contraction of 'tomorrow's puppies.'

The Toppies have evidently inherited Chase's talents -- they passed the first round of tests for behavioural patterns and genetic qualities.

"They will report for duty in June after completing a second round of training," said Lee Ho, spokesperson for South Korea's customs service.

The cloning project came about when the customs service decided that it would be easier to clone the best sniffer dogs as opposed to training them from scratch.

For lead geneticist Lee Byeong-Chun, the breakthrough is another first -- he played a key role in the first ever successful cloning of a dog, a three-year-old Afghan Hound.

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Is There Anybody Out There?:
No Says Scientist
by The Mullah

earth.jpgA scientist has poured cold water on the hopes of believers in extra-terrestrial life -- he has concluded that the probability of life emerging on other Earth-type planets is less than 0.01%.

This pessimism is founded on the fact that life emerged on Earth relatively late in the age of the biosphere.

“The Earth’s biosphere is now in its old age and this has implications for our understanding of the likelihood of complex life and intelligence arising on any given planet,” said Professor Andrew Watson of the School of Environmental Sciences at the University of East Anglia.

“At present, Earth is the only example we have of a planet with life."

"If we learned the planet would be habitable for a set period and that we had evolved early in this period, then even with a sample of one, we’d suspect that evolution from simple to complex and intelligent life was quite likely to occur."

"By contrast, we now believe that we evolved late in the habitable period, and this suggests that our evolution is rather unlikely."

"In fact, the timing of events is consistent with it being very rare indeed.”

Professor Watson has identified four key stages in the development of life on earth: single-celled bacteria; more complex cells; specialised cells allowing complex life forms; intelligent life using language.

He estimates that the probability of each of these stages occurring during the four billion year life-span of the Earth is no more than 10%.

Therefore the probability of intelligent life emerging is low -- less than 0.01% over four billion years.

“Complex life is separated from the simplest life forms by several very unlikely steps and therefore will be much less common."

"Intelligence is one step further, so it is much less common still.”

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The Rules Of Attraction:
Using Magnets To Deliver Medication
by Simon Magus

monocytes.jpgResearchers have developed a technique that uses magnets to direct cancer-killing cells into the tumour where they are needed.

Previous attempts to use gene therapy as a cancer treatment have foundered -- the genes didn't always end up in the part of the body where they were needed.

Now researchers have found a way to inject magnetic nanoparticles directly into a class of white blood cells known as monocytes.

An external magnet over a cancerous tumour then draws in the magnetised cells to the area where they are needed.

"The use of nanoparticles to enhance the uptake of therapeutically armed cells by tumours could herald a new era in gene therapy -- one in which delivery of the gene therapy vector to the diseased site is much more effective," said Professor Claire Lewis of the University of Sheffield, a lead researcher.

"This new technique could also be used to help deliver therapeutic genes in other diseases like arthritic joints or ischemic heart tissue."

Although the concept of magnetic targeting is not new, this is one of the first successful applications of the idea.

"Though the concept of magnetic targeting for drug and gene delivery has been around for decades, major technical hurdles have prevented its translation into a clinical therapy," said Professor Jon Dobson from the University of Keele, a fellow researcher.

"By harnessing and enhancing the monocytes' innate targeting abilities, this technique offers great potential to overcome some of these barriers and bring the technology closer to the clinic."

Gene therapy has shown great promise, although clinical trials have revealed serious problems -- children have developed leukaemia as a result of treatment, and an adult patient died during a 1999 trial.

"We would hope that this will be safer because we are using a natural mechanism in the body and patients' own white blood cells to deliver the gene therapy," Professor Lewis said.

"We're simply amplifying that with this magnetic approach."

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Cloudbusting:
Stopping Rain At The Beijing Olympics With Rockets
by The Mullah

raindrops.jpgChina are preparing to use rockets to disperse clouds and prevent rainfall marring the Beijing Olympics.

"We've worked with neighbouring provinces on a contingency plan for rainstorm and other weather risks during the ceremonies," said Wang Yubin, a senior engineer at the Beijing Meteorological Bureau.

The Chinese government has spent £250,000 developing Beijing's cloud seeding programme over the last five years.

"At present, Beijing has relatively advanced technology for artificially influencing weather conditions," said Zhang Qiang, deputy director of the Weather Manipulation Office.

"That is to say, small or moderate rain can be eliminated artificially."

More than 100 staff at 21 stations surrounding Beijing will fire rockets containing silver iodide at approaching clouds, with the intention of causing rainfall before they can reach the stadium.

Three aircraft will also be available to spray a catalyst onto the clouds -- either silver iodide or liquid nitrogen.

"There are many very important factors in the implementation of the two methods," said Wang.

Officials have been keen to reassure citizens that the chemicals used in cloud seeding do not pose an environmental threat.

"Liquid nitrogen does not pollute the environment at all and we use just one gram of silver iodide per square kilometre," Wang said.

"We monitored the main water system from 2003 to 2007 and found no situations that failed to meet the environmental quality standards."

In spite of the scientific approach, some involved in the project still turn to older sources of reassurance in the hope of having good weather.

"I hope God will not send any storms to Beijing," said Zhang.

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Hand On Heart:
Aztecs Used Symbols To Perform Complex Maths
by Simon Magus

aztecruins.jpgResearchers have analysed nearly 2,000 Aztec property maps form the 16th century and discovered that they used symbols such as hearts and hands to express fractions.

Barbara Williams of the University of Wisconsin-Rock County and Maria del Carmen Jorge y Jorge of the Universidad Nacional Autonoma de Mexico studied the maps used by the Acolhua people of Tepetlaoztoc to document agricultural properties.

"What we found that was surprising, was how accurate the Aztec surveyors were from a mathematical perspective," said Williams.

"What we thought we knew about the Aztec measuring system was a little simplistic."

"We've determined that it was more complex."

"They used the four mathematical operations of addition, subtraction, multiplication and division."

"But in almost all of the early societies, they could do everything they needed to do, with just those four."

"They didn't need square roots."

"They didn't need trigonometry."

The researchers used trial and error methods to decode the meanings of various symbols that turned out to describe fractional areas on the maps.

"We found these smaller units of measure that we call monads that have the role of a fraction," said Dr Jorge y Jorge.

"We don't like to call them fractions, though, because they were considered as unitary entities like inches, seconds or minutes."

Scientists discovered nearly in 1980 that the Aztecs could calculate areas, but the method was largely unknown until now.

"This increases our understanding of Aztec culture," said Williams.

"It gets to the idea that it was a numerate society in the rural areas as well as the urban areas -- among the surveyors as well as the priests and the royalty."

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Sea Of Love:
Octopi Have Sophisticated Sex Lives
by The Mullah

octopi.jpgResearchers have shed light on the previously unknown sexual habits of octopi -- they have been observed flirting, holding hands and displaying jealousy.

The creatures have proved difficult to study in the wild, leading to the mystery about their sex lives.

"They're obsessively secretive, solitary and pretty spooky," said Roy Caldwell, co-author of the study and Professor of Integrative Biology at the University of California in Berkeley.

"If you watch them, they watch you back."

"It's hard to study them."

Lead author and graduate student Christine Huffard chose to observe octopi by snorkelling in the waters off Indonesia to observe the Abdopus aculeatus octopus.

The creature is the size of a small orange and has arms that are 20-25 cm long.

"Each day in the water, we learned something new about octopus behavior, probably like what ornithologists must have gone through after the invention of binoculars," she said.

"We quickly realized that Abdopus aculeatus broke all the 'rules' -- doing the near opposite of every hypothesis we'd formed based on aquarium studies."

These new observations may help to illuminate the mating habits of other types of octopi.

"This is not a unique species of octopus, which suggests others behave this way," said Professor Caldwell.

Male octopi were observed selecting a sex partner as opposed to picking the first female that came along.

One a male had made a choice, he would jealously guard the female's den for several days.

Males would occasionally use their arms to strangle a rival to death.

Once the male impregnated the female with his sperm, she would then lay tens of thousands of eggs in her den.

After the eggs hatched, the weakened mother octopus died.

The father would also expire within a few months of mating -- leaving the newborn octopi to fend for themselves.

"It's not the sex that leads to death," said Huffard.

"It's just that octopuses produce offspring once during a very short life-span of a year."

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Worth Its Salt:
Salt Water Could Provide Sustainable Power
by Simon Magus

thesea.jpgNorwegian and Dutch researchers have found a way to tap the energy from the chemical reaction that occurs when fresh water encounters salt water.

A fjord south of Oslo is the site for a new experimental power plant, where researchers will attempt to extract energy from the osmotic reaction that takes place when fresh river water combines with the saline water of the sea.

When saline and fresh water are mixed at river mouths, they typically warm up by 0.1 degree Celsius (0.2 Fahrenheit).

Scientists in the Netherlands estimate that the energy at all the world's estuaries is equivalent to 20 percent of global electricity demand.

"We might well be able to find new promising solutions such as generating power naturally from osmotic forces occurring when salt and fresh water are mixing," said Liv Monica Stubholt, Norwegian deputy minister of energy.

The Norwegian state-owned power company Statkraft is spending US$20 million (£10 million) on the Oslo test plant.

"Ours will be the world's first saline power plant based on osmosis," said Stein Erik Skilhagen, a spokesperson for Statkraft.

The Dutch Centre for Sustainable Water Technology (Wetsus) will also begin construction soon on a saline power plant at IJsselmeer, a former estuary of the Rhine that was dammed to create a large fresh water lake.

"At the start, it will be on the scale of 100 watts -- but we aim at this salt factory to obtain one to five kilowatts within one year," said Jan Post, a researcher at Wetsus.

The Norwegian and Dutch plants use different methods but both rely on membranes placed between the salt and fresh water.

These crucial membranes are currently expensive and energy-intensive to produce, which could be a major barrier to commercialisation.

"The Achilles' heel for this process is that there is no commercial membrane," said Menachim Elimelech, professor of chemical and environmental engineering at Yale.

"It's not even close to being economical."

"The membrane is the challenge," Skilhagen conceded.

"In tests we have come over three watts per square metre, but we have to reach five."

"When we do that it will be industrially interesting."

The Dutch are close to generating two watts per square metre of membrane.

"In theory, both techniques use the same energy source and you could in theory get the same amount of energy out," said Sybrand Metz, project leader at Wetsus.

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Super:
Scientists Create Room Temperature Superconductors
by The Mullah

superconductor.jpgScientists working in Canada and Germany have discovered a new class of superconductors, which can be used at room temperature.

The breakthrough material is a hydrogen compound called silane, composed of hydrogen and silicon.

Pure hydrogen has been seen as a potentially good superconductor, but has proven hard to work with in practice.

Researchers got around this by compressing silane to high pressure, which apparently obviates the need for cooling.

"If you put hydrogen compounds under enough pressure, you can get superconductivity," said Professor John Tse of the University of Saskatchewan.

"These new superconductors can be operated at higher temperatures, perhaps without a refrigerant."

Virtually all superconductors require cooling to lower temperatures to be effective.

Room temperature superconductors could vastly improve existing applications such as MRI scanners and magnetic-levitation trains.

But they could also allow new components to be developed, such as superconducting wires.

“Validation of this hypothesis and understanding of the mechanism are initial steps for design of better superconducting materials,” said Professor Tse.

Silane is also being used by scientists at Penn State University in the United States and the University of Southampton in the United Kingdom to create better optical fibres.

Their researchers have developed a process for growing a single-crystal semiconductor inside the tunnel of a hollow optical fibre.

Signals are often degraded by the interface between optical fibres and devices -- adding the semiconductor could be a solution to that problem

"We were able to embed a nanostructured crystal into the hollow tube of an optical fiber to create a completely new type of composite device," said Pier Sazio, senior research fellow in the Optoelectronics Research Centre at the University of Southampton.

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Right On The Snail:
Sea Snails Inspire New Nano-Materials
by Simon Magus

belcher.jpgSea snails have inspired a scientist to create new kinds of nano-materials that could eventually repair their own damage -- the first application has yielded a thin and transparent rechargeable battery.

Angela Belcher was inspired by the sea snail known as the abalone, commonly found clinging to rocks on the coast of California.

The tough shell of the abalone is 98 percent calcium carbonate, also known as chalk -- yet it is 3,000 times stronger.

"The abalone makes this amazing material out of a common mineral," said Belcher, Germeshausen Professor of Materials Science and Engineering and Biological Engineering at MIT.

"Suddenly, I wondered, what if we could assemble materials like the abalone does -- but not be limited to one element?"

"What if we could bond protein to other elements in the periodic table and grow new materials?"

"It seemed so logical and easy."

"Shells had been self-assembling, manufacturing amazing materials for 500 million years."

Professor Belcher has developed a virus engineered to latch itself to cobalt oxide, thereby creating an efficient batttery.

Looking like a transparent film, it could one day be poured onto the object to be powered, just like a coat of paint.

Viral films could one day become integral to all kinds of electronic, optical, and magnetic devices.

Professor Belcher is pursuing the technique further, still using the abalone for inspiration.

"It builds exquisite materials," she said.

"It's a very nice animal."

"Abalone shells are self-assembling."

"What if we could make a material that is self-re-assembling?"

"What if iPods and Blackberrys could genetically mend their own cracks?"

"These devices get dropped, they break -- what material can we make so they fix themselves?"

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Bugs In The System:
Scientists Want To Create Autonomous Robot Swarms
by The Mullah

sentinels.jpgScientists are working on tiny robots that can be deployed in swarms, and can combine with each other according to the conditions they are confronted with.

The robots are being developed under the Symbrion project, funded by the EU.

"A swarm could be released into a collapsed building following an earthquake," said Professor Alan Winfield from the University of the West of England, and one of the members of the Symbrion project.

"They could form themselves into teams searching for survivors or to lift rubble off stranded people."

"Some robots might form a chain allowing rescue workers to communicate with survivors while others assemble themselves into a ‘medicine bot' to give first aid."

Each robot will have wheels or tentacles to allow independent movement, along with computing power, sensors, and a transceiver that allows each robot in the swarm to communicate.

"The robots have functionality on their own, but they can also combine together or adapt and change as the situation requires," said Professor Winfield.

"The individual robots won't change physically, but they will adapt and evolve their functionality."

"Once the robots come together they will be more versatile - like a colony of cells such as those found in a jelly fish or a sponge.

"The different robots will co-operate to create the larger organism. In a sponge even if there is damage to some parts, the overall organism still survives.

"In this way the artificial robotic organisms might in theory become self-configuring, self-healing and self-optimising from both hardware and software perspectives."

Professor Winfield denied that such an autonomous swarm could malfunction, causing injury or death to humans.

"It might sound like something scary from science fiction but it's not, it's just a complex engineering system," he said.

"It will have to go through safety and validation assessments before it would be used in real life situations."

"As scientists we behave ethically but we can't determine how these things might be used."

"That is a question for wider society to determine."

Serge Kernbach, a member of the Symbrion project at Stuttgart University, estimates that the first working robot swarms will come online in the next 10 to 15 years.

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Peep Show:
Camera Can See Items Hidden Under Clothing From 25 Metres Away
by Simon Magus

A UK company has developed a camera that can detect items hidden under people's clothes from up to 25 metres away.

The camera can detect objects by the natural electromagnetic rays -- known as Terahertz or T-rays -- that they all emit.

Terahertz rays lie between infrared and microwaves on the electromagnetic spectrum and can pass through clouds and walls.

"Acts of terrorism have shaken the world in recent years and security precautions have been tightened globally," said Clive Beattie, chief executive of ThruVision, developers of the camera.

"The T5000 dramatically extends the security surveillance envelope for ThruVision’s passive body scanning products used at important sites and events."

"The ability to see both metallic and non-metallic items on people out to 25m is certainly a key capability that will enhance any comprehensive security system deployment.”

Customers are already targeting applications for the new system.

“This could be deployed at major sporting events, concerts and rail stations as well as for military use,” said Bill Foster, president of Thermal Matrix, a US defence contractor specialising in imaging systems for the military.

The technology was originally developed for use by the European Space Agency.

But scientists soon realised that T-rays could be employed closer to home for security applications.

The initial research took place at the STFC Rutherford Appleton Laboratory, but was then spun off into ThruVision for commercialisation.

“Astronomers use T-ray cameras that can see through dust and clouds in space, revealing what lies beyond," said Dr Liz Towns-Andrews, Director of Knowledge Exchange at STFC.

"ThruVision uses them to see weapons hidden by clothing."

"This is a first-class example of how fundamental scientific research can be applied to benefit the whole of society."

"Who would have imagined that research carried out by space scientists to study the stars could result in it being used to protect the public
from terrorists and therefore save lives?"

"The impact of this will be remarkable."

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The Shape Of Things To Come:
Scientists Demonstrate Rewritable Holograms
by The Mullah

simontam.jpgScientists have created a breakthough 3D holographic display that can be erased and rewritten in a matter of minutes.

It is the first updatable 3D display with memory ever to be developed -- and can be viewed without special eyewear.

"This is a new type of device, nothing like the tiny hologram of a dove on your credit card," said Nasser Peyghambarian, co-developer and professor of optical sciences at the University of Arizona.

"The hologram on your credit card is printed permanently. You cannot erase the image and replace it with an entirely new three-dimensional picture."

Peyghambarian believes that the technology will eventually make its way into everyday life.

"Imagine that when you walk into the supermarket or department store, you could see a large, dynamic, three-dimensional product display."

The scientists believe that their work could finally make holograms feasible for practical applications.

"Holography has been around for decades, but holographic displays are really one of the first practical applications of the technique," said Savas Tay, co-developer and optical science researcher at the University of Arizona.

The prototype measures four inches square and only projects in red, but the researchers see larger full-colour displays as realistic in the near future.

"We use highly efficient, low-cost recording materials capable of very large sizes, which is very important for life-size, realistic 3D displays," Peyghambarian said.

"We can record complete scenes or objects within three minutes and can store them for three hours."

The researchers are now experimenting with pulsed lasers as a way to improve image quality.

"If you can write faster with a pulsed laser, then you can write larger holograms in the same amount of time it now takes to write smaller ones," Tay said.

"We envision this to be a life-size hologram. We could, for example, display an image of a whole human that would be the same size as the actual person."

Tay sees that holograms could one day soon become a vital diagnostic tool for doctors.

"Three-dimensional imaging techniques are already commonly used in medicine, for example, in MRI or CAT scan techniques," said Tay.

"However, the huge amount of data that is created in three dimensions is still being displayed on two-dimensional devices, either on a computer screen or on a piece of paper."

"A great amount of data is lost by displaying it this way."

"So I think when we develop larger, full-color 3D holograms, every hospital in the world will want one."

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Across The Universe:
Nasa To Beam Music Into Deep Space
by Simon Magus

beatles.jpgNasa are planning to beam music into deep space for the first time -- selecting the Beatles song 'Across The Universe' for the occasion.

"Amazing! Well done Nasa! Send my love to the aliens," said Sir Paul McCartney, one of the two surviving Beatles.

Although Nasa have often transmitted music to astronauts in orbit, this is the first time that they have targeted deep space -- in this case, the North Star aka Polaris.

Polaris is situated 2.5 quadrillion miles away -- or 2,500,000,000,000,000,000,000,000 miles away if you prefer.

The song will take 431 years to reach Polaris -- arriving in the year 2439.

This historic transmission is intended to celebrate a number of anniversaries.

2008 sees the 50th anniversary of the formation of Nasa.

This year is also the 50th anniversary of key events surrounding the formation of The Beatles.

The first ever US satellite -- Explorer 1 -- was launched into space 50 years ago.

And February 4th is the 40th anniversary of the Beatles recording Across The Universe at the legendary Abbey Road studios.

Transmission will commence from the Jet Propulsion Laboratory in Pasadena, California, where Explorer 1 was built and launched 50 years ago.

The song will be beamed to Nasa's Deep Space Communications Complex in Madrid, Spain.

From there, it will be sent into space via a 70-metre diameter DSS-63 antenna.

This antenna is usually used to communicate with deep space spacecraft, such as Voyager and Cassini.

Across The Universe was reputedly one of John Lennon’s favourite songs.

Although credited to Lennon-McCartney, the song was mostly written by Lennon.

"I see that this is the beginning of the new age in which we will communicate with billions of planets across the universe," said Yoko Ono, Lennon's widow.

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Sweet:
Genetically Modified E. Coli Turns Sugar Into Hydrogen
by The Mullah

ecoli.jpgA strain of E. Coli has been genetically engineered to efficiently turn glucose into hydrogen -- which could lead to cleaner ways to make the sought after gas.

Thomas Wood, a professor in the Artie McFerrin Department of Chemical Engineering at Texas A&M University, removed six genes from the E. Coli genome.

This resulted in a strain that produces 140 times more hydrogen than unmodified E. Coli.

"These bacteria have 5,000 genes that enable them to survive environmental changes," said Wood.

"When we knock things out, the bacteria become less competitive."

"We haven't given them an ability to do something."

"They don't gain anything here -- they lose."

"The bacteria that we're making are less competitive and less harmful because of what's been removed."

As cultivation of crops for biofuel becomes more popular, Wood sees this as a good way to take the resulting sugars and turn them into usable energy.

"A lot of people are working on converting something that you grow into some kind of sugar," he said.

"We're going to get some form of sugar-like molecule and use the bacteria to convert that into hydrogen."

Wood sees his process as far superior to energy-intensive processes such as electrolysis, which uses of electricity and water to create hydrogen.

"One of the most difficult things about chemical engineering is how you get the product," he explained.

"In this case, it's very easy because the hydrogen is a gas, and it just bubbles out of the solution."

"You just catch the gas as it comes out of the glass."

"That's it -- you have pure hydrogen."

Concerns have been raised over the transportation and storage of hydrogen, but Wood thinks that his process could make on-site manufacture feasible.

"The main thing we think is you can transport things like sugar, and if you spill the sugar there is not a huge catastrophe," he said.

"The idea is to make the hydrogen where you need it."

He now wants to refine the process and make it even more efficient, with the hope that it could become a viable source of energy.

"Take your house, for example," said Wood.

"The size of the reactor that we'd need today if we implemented this technology would be less than the size of a 250-gallon fuel tank found in the typical east coast home."

"I'm not finished with this yet, but at this point if we implemented the technology right now, you or a machine would have to shovel in about the weight of a man every day so that the reactor could provide enough hydrogen to take care of the average American home for a 24-hour period."

"We're trying to make bacteria so it's doesn't require 80 kilograms -- it will be closer to 8 kilograms."

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What Goes Up:
US Spy Satellite Set To Plummet Earthwards
by Simon Magus

radarsat.jpgA failed US spy satellite could plummet to Earth sometime in February or March.

“Appropriate government agencies are monitoring the situation,” said Gordon Johndroe, a spokesman for the National Security Council.

“Numerous satellites over the years have come out of orbit and fallen harmlessly."

"We are looking at potential options to mitigate any possible damage this satellite may cause.”

It is suspected that the craft in question could be USA 193, a radar satellite that malfunctioned shortly after it was launched in December 2006.

Possible hazards from the satellite include beryllium, a toxic metal commonly used in the defence and aerospace industries.

Due to onboard malfunctions, the craft may also be carrying a large amount of hydrazine propellant.

Hydrazine can damage the central nervous system and is fatal in large doses.

But space scientists are downplaying the hazards posed by debris from the satellite reaching the ground.

"When they re-enter they usually burn up in the atmosphere because a lot of heat has developed and there is a lot of friction," said Dr Ruediger Jehn, a space debris analyst at the European Space Agency.

"Only heat-resistant or very heavy objects will survive."

"There is a risk in this case that something will hit the ground, but given that the Earth is so big, the probability in this case that someone will be hit is really remote."

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Slow Boat To Venezuela:
The Sail Makes A Comeback
by Simon Magus

skysail.jpgAn experimental ship is sailing for Venezuela a voyage to discover if an old technique can be of use today -- the craft boasts a sophisticated sail in the shape of a computer-controlled kite.

The 10,000-tonne MS Beluga SkySails set off on its maiden voyage from Bremen with the newly developed kite attached to the bows.

"Only the tough conditions imposed on a ship during a long voyage of this kind can show whether the SkySail is effective and whether the materials can stand up to the stresses and strains it will undergo," said Stephan Wrage, managing director of shipbuilder SkySails.

"During the next few months we will finally be able to prove that our technology works in practice and significantly reduces fuel consumption and emissions."

"We aim to prove it pays to protect the environment."

"Showing that ecology and economics are not contradictions motivates us all."

The 160-square-metre kite could reduce fuel consumption by 35 percent -- dependent on prevailing wind conditions.

But SkySails acknowledge that the experimental sail may not be sufficiently strong for general commercial use at the moment.

"It is particularly important to raise the manageability and robustness of the system to the level demanded by our customers," said Stephan Brabeck, technical manager at SkySails.

But shipping companies are keenly aware that energy costs are increasing and are anxious to test the effectiveness of the sail.

Germany's Beluga Shipping has two more vessels on order and SkySails have a total of five ships on their order book at present.

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Greening Their Act Up:
Abu Dhabi Ploughs US$15 Billion Into Sustainable Living
by Al Mullah

masdar.jpgThe United Arab Emirates have announed plans to construct the world's largest hydrogen power plant and a zero-carbon city for 50,000 residents without need for cars -- all backed with US$15 billion (£7.7 billion) in funding.

The sustainable city, dubbed Masdar, is being designed with help from the environmental group WWF, and all energy used there is intended to be renewable -- principally from solar panels.

"It's extremely ambitious," said Gerard Evenden, senior partner at Norman Foster's architecture practice, where the designs for Masdar are taking shape.

"We were invited to design a zero-carbon city."

"In this harsh place we needed to look back at history and see how ancient settlements had adapted to their environments."

The city will be aligned north-east to south-west to provide the ideal balance of sun and shade.

Homes and offices will be constructed to allow air in but keep the Sun's heat out -- with wind towers using natural convection to provide ventilation.

Buildings will be limited to five storeys, and packed around narrow streets no more than 3 metres wide and 70 metres long -- this is intended to create a micro-climate where the air is constantly moving.

"This will be the global capital of the renewable energy revolution," said Jean-Paul Jeanrenaud, head of WWF's One Planet Living initiative.

"It's the first oil producing nation to have taken such a significant step towards sustainable living."

Masdar will boast a hydrogen plant which will create the gas from natural gas using steam, resulting in a mixture of hydrogen and carbon dioxide.

The CO2 will be sequestered underground or may alternately be used to extract more oil from existing wells, by using it at pressure to force deposits to the surface.

"It's important because it shows that you can generate hydrogen without carbon release from fossil fuels," said Keith Guy, professor of chemical engineering at Bath University.

"When you look at how hydrogen could be made economically, the route that many people have been looking at -- through electrolysis of water -- is incredibly expensive."

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Crackology:
Sociologist Infiltrated Drug Gangs For Seven Years And Lived
by Simon Magus

crackmouth.jpgA US sociologist spent seven years in the 1990s leading a double life. When he was not studying at the University of Chicago, he would spend days at a time in the city's worst housing projects, observing the drug subculture up close.

Stephen J Dubner, author of the best-seller Freakonomics and sometime collaborator, says that Venkatesh was born with 'an overdeveloped curiosity and an underdeveloped fear.'

Ventakesh is now a 41-year-old sociology professor at New York's Columbia University.

He has set down his unique experiences in a new book, entitled Gang Leader for a Day.

Venkatesh's mentor was 'JT', leader of the Black Kings gang.

Although JT had a college degree, he abandoned corporate America to run a crack dealing operation that netted him up to US$100,000 (£51,000) every year.

JT considered himself to be a political leader and Venkatesh his biographer.

Residents grew to accept Venkatesh because he asked few questions -- and as a South Indian American, he was neither black nor white.

As time went on, JT challenged Venkatesh academically, forcing him to think more deeply about urban poverty in the US.

The friendship grew so deep that after a few years, JT handed Venkatesh the reins to his gang for a day -- a job Venkatesh discovered wasn't as easy as it seemed.

Venkatesh heard gang leaders talk of the importance of community while simultaneously destroying it with crack -- a dichotomy he found hard to reconcile.

He also struggled to understand why besieged residents put up little resistance.

"Everyone is caught up in a world of desperation," said Venkatesh.

"Making moral decisions the way middle class people would is almost impossible."

But it was the violence that Venkatesh found hardest of all to deal with.

"A man would beat up a woman and then residents would beat that man up," he said.

"That sound of bone on bone then a moan like a sick cow being beaten -- you never forget that."

Ventakesh hopes his book will help the public 'understand the combination of desperation and creativity and ingenuity that exists in some of the poor neighborhoods.'

"I don't want poverty to fall off the map,'' he said.

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Love For Sale:
Monkeys Trade Grooming For Sex
by The Mullah

macaque.jpgA new study shows that male macaque monkeys have sex and pay for it by grooming the females -- possibly indicating that primates see sex as a commodity.

"In primate societies, grooming is the underlying fabric of it all," said Dr Michael Gumert, a primatologist at the Nanyang Technological University in Singapore.

"It's a sign of friendship and family, and it's also something that can be exchanged for sexual services."

Dr Gumert spent 20 months observing 50 long-tailed macaques at a reserve in Central Kalimantan, Indonesia.

He observed that after a male grooms a female, the probability that she would have sex with him was three times greater.

Males would spend more time grooming a female if there were fewer females in the area.

"And when the female supply is higher, the male spends less time on grooming," said Dr Gumert.

"The mating actually becomes cheaper depending on the market."

The findings are a major contribution to the emerging theory of 'biological markets', which tries to explain the interaction of organisms in ways in which an exchange of commodities or services can be observed.

Dr Peter Hammerstein first proposed the concept of biological markets in 1994, along with Dr Ronald Noe.

"There is a very well-known mix of economic and mating markets in the human species itself," said Dr Noe, a primatologist at the University of Louis-Pasteur in Strasbourg.

"There are many examples of rich old men getting young attractive ladies."

Dr Hammerstein said that Gumert's findings indicate that the primates can alter their behaviour to match 'different market conditions.'

"It is not a rare phenomenon in nature that males have to make some 'mating effort' in order to get a female's permission to mate," said Dr Hammerstein, a professor at the Institute for Theoretical Biology at Humboldt University in Berlin.

"The interesting result of Dr Gumert's research on macaque mating is that the mating market seems to have an influence on the amount of this fee."

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Pyramid Scheme:
Aztec Ruins Found In Centre Of Mexico City
by Simon Magus

aztecruins.jpgArcheologists have found a ruined 800-year-old Aztec pyramid in the Mexico City -- which could prove that the ancient city is at least a century older than previously thought.

"We have found the stairs of this, much older pyramid. The timeline is going to need to be revised," said Patricia Ledesma, one of the archaeologists excavating the site.

The ruins are 36 feet high and were found in the central Tlatelolco area -- once a major religious and political centre for the Aztecs.

Historians previously thought that Tlatelolco was founded by the Aztecs in 1325, at the same time as the nearby twin city of Tenochtitlan.

Tenochtitlan was razed by the Spanish in 1521 to found Mexico City as we know it, signifying the total conquest of the Aztecs.

But Mexico City still has many ruins from the time before the Conquistadors.

Archeologists recently unearthed what could be the main pyramid of Tenochtitlan.

The newly discovered pyramid in Tlatelolco could have been built as early as 1100 or 1200, meaning that the Aztecs developed their civilisation earlier than was previously thought.

The dig has also found a sculpture that could either be the Aztec rain god Tlaloc or the god of the sky and earth Tezcatlipoca.

Archaeologists have also founf five skulls and a series of rooms near the ruins that may date from 1431.

"What we hope to find soon should tell us much more about the society of Tlatelolco," said Ledesma.

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O Hai Nanhai:
Chinese Raise 800-Year-Old Merchant Ship From Seabed
by The Mullah

songjunk.jpgAn 800-year-old merchant ship has been raised from the bottom of the South China Sea, full of artefacts that may confirm the existence of an ancient 'Marine Silk Road' linking China and the West.

"The boat is 30.5 metres long and 9.3 metres wide, which is the oldest, largest and best preserved off-shore merchant ship in the world," said Chen Zhiyue, vice mayor of Yangjiang city.

"We estimated that there were 50,000 to 70,000 relics on it."

The ship was first discovered in 1987 at a depth of 30 metres and buried in a two metre thick layer of silt.

Twenty years after the find, archaeologists raised the ship to the surface in a giant steel box -- a process that took two hours as a crane lifted the box.

"We haven't seen any silt or water leakage from the box," said Wu Jiancheng, lead archaeologist.

"The boat is still in almost the same environment as it has been over the centuries."

Dubbed the Nanhai Number 1 or 'South China Sea Number 1' by archaeologists, the ship has been transported to nearby Yianjing where it will be displayed in a tank known as the 'Crystal Palace.'

This huge glass tank simulates the water temperature, pressure and other environmental conditions of the seabed where the Nanhai was found.

The Nanhai will be the centrepiece of a museum opening in 2008 that will offer visitors the chance to watch the painstaking excavation of the silt encrusting the hull -- a process that could take years.

It is hoped that the Nanhai may prove that ancient China and the West were engaged in trade across the seas, in parallel with overland trade via the Silk Road.

"The Marine Silk Road, like the ancient Silk Road which connected China with south, west and central Asia and Europe, was also a bridge linking Eastern and Western cultures," said Huang Zongwei of Sun Yat-Sen University in Guangdong province.

"But evidence for existence of the route has been rare."

That could all change once the Nanhai finally gives up its secrets.

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Fine:
McDonald's Penalises Slow Eaters
by The Mullah

ronaldmcdonald.jpgMcDonald's has slapped a 45 minute limit on diners at the company's drive-in outlets. Drivers staying longer are given a £125 fine.

"I ordered a burger, chips, a doughnut, coke and coffee," said Jamie Thomson, a motorist who ate at McDonald's recently.

"I sat in my car eating my lunch, and listening to the radio.

"After eating, I continued to sip my coffee for a time, and ate my doughnut.

"Then I left. All perfectly normal."

Weeks later, Thomson received a letter from a company employed by McDonald's that demanded £125, or £75 if the charge was paid promptly.

He asked for proof of his infraction, but was informed that he would be charged for a photo.

Thomson then contacted DVLA, the Driver and Vehicle Licensing Agency, to determine how McDonald's had found his details.

DVLA informed him that they release data to any body they feel has 'reasonable cause' to do so.

McDonald's told Thomson that 'enforcement methods' were only used in 'extreme' cases.

"At this restaurant we have stipulated that a member of the public may be parked for 45 minutes unless permission is given to stay longer by the duty manager," said a spokesperson for the company.

McDonald's has refused to accept responsibility for the charges, claiming that they do not profit from them and that the administrating company Civil Enforcement are to blame.

Thomson's charge has now risen to £213.

He has received a letter from a debt collection company and been threatened with legal action.

Thomson says that no-one in his family will ever eat at McDonald's again.

Civil Enforcement's founder, Gary Wayne, defended his company by stating that their 'hi-tech approach' was 'less confrontational than clamping and towing.'

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Ebony And Irony:
Race Row Scientist Has Black Ancestry
by Simon Magus

jimwatson.jpgNobel laureate James Watson recently sparked controversy by claiming that black people were genetically predisposed to be less intelligent. The geneticist may be forced to eat his own words after analysis of his own genome shows that he has black ancestry.

“This level is what you would expect in someone who had a great-grandparent who was African,” said Kari Stefansson of deCODE Genetics, the company responsible for the analysis.

“It was very surprising to get this result for Jim."

Watson recently resigned as chancellor of the Cold Springs Harbor laboratory after controversial remarks he made provoked a furore around the world.

In an interview, Watson claimed to be 'inherently gloomy about the prospects for Africa' as 'all our social policies are based on the fact that their intelligence is the same as ours - whereas all the testing says not really.'

But deCODE's analysis of Dr Watson's genome shows 16 of his genes probably came from a black ancestor of African origin.

By contrast, most people of European origin would have no more than one gene of this type.

A further nine of Watson's genes may have come from an ancestor of Asian descent.

Watson consented to the results of the analysis to be published on the internet in the interests of science and research.

Critics of Watson's remarks on race and intelligence are no doubt appreciating the deep irony of these revelations.

"I never did agree with Watson's remarks," said John Sulston, fellow Nobel laureate and one of the leading contributors to the Human Genome Project.

"We don't understand enough about intelligence to generalise about race."

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Where There's Muck:
Breakthrough As Bacteria That Excrete Nanotubes Discovered
by Simon Magus

shewanella.jpgTwo researchers have found a bacterium by chance that produces semiconducting nanotubes -- the first time nanotubes have been shown to be produced by biological rather than chemical means.

“We have shown that a jar with a bug in it can create potentially useful nanostructures,” said co-discoverer Nosang V. Myung, associate professor of chemical and environmental engineering at Bourns College of Engineering.

Myung and his postdoctoral researcher Bongyoung Yoo were experimenting with the metal-reducing bacterium Shewanella -- they were attempting to remove arsenic contamination.

They were able to identify and characterise the resulting nano-material.

"Each species of Shewanella might have individual implications for manufacturing properties," said Myung.

The nanotubes produced by the bacteria behave as metals with electrical and photoconductive properties.

They could potentially find a home in the nanotech and optical devices of tomorrow.

“Nanotubes are of particular interest in materials science because the useful properties of a substance can be finely tuned according to the diameter and the thickness of the tubes," Myung said.

Current manufacturing methods use large amounts of energy, and involve toxic metals and chemicals.

Myung says that a growing movement in science and engineering is looking for ways to produce semiconductors in more environmentally friendly ways.

"This is just a first step that points the way to future investigation," he said.

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Virtual Virtuoso:
Toyota Create Robot Violinist
by Simon Magus

toyotarobot.jpegToyota have demonstrated a new robot with enough dexterity to play Elgar's Pomp and Circumstance flawlessly on a violin.

"We began to use industrial robots in our factories in the 1980s that have been perfected over time to be capable of working on several car models or carrying out different tasks," said Toyota chief executive Katsuaki Watanabe.

"Now we want to accelerate the development of robots that make a contribution to society, drawing on our knowledge and innovation in the field of automobiles.

"Technologies used to enrich the abilities of robots can also be used to improve the functionality of automobiles."

Watanabe said that robotics will be a core business for the Toyota in the future.

The company plans to deploy robots at hospitals and some Toyota corporate from next year.

They hope to put what they call 'partner robots' to real use by 2010.

Japan represents a huge potential market for robots, especially for applications such as caring for the elderly.

The country strictly controls immigration, causing labour shortages at a time when the the elderly are a growing section of society.

Toyota also unveiled a two-wheeled, single-seat 'mobility robot.'

This new class of device could be used to transport an elderly or disabled person over uneven ground and around obstacles.

"We want to create robots that are useful for people in everyday life," said Watanabe.

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Bug In The System:
Robotic Cockroaches Fool The Real Thing
by The Mullah

roach.jpgScientists have created a robot version of the cockroach that blends in with real insects -- the social insects admitted the robots into their group.

"While this kind of behaviour has been seen in groups of living animals ranging from insects to vertebrates, this study shows that autonomous robots can be used to study and control group behavior," said Jose Halloy of the University Libre de Bruxelles in Belgium.

"What is new here is that the robot is autonomous, it is not remote-controlled by humans, and it acts at the social level in a group living insects."

The robots were programmed by researchers to act independently and they went on to infiltrate a colony of cockroaches and influence its behaviour.

"We see them as a tool to explore decision-making mechanisms in group-living animals," said Halloy.

Creating the insectoid robots is part of move to make robots more autonomous.

"Of course, the number of neurons and synapses is much smaller," said Gerald Edelman of the Neurosciences Institute in San Diego, California.

"But if you do the thing right, it actually does function for sophisticated purposes, such as perception and episodic memory."

Technology based on living creatures was predicted by Kevin Kelly in his 1995 book, Out Of Control.

"Artificial complex systems will be deliberately infused with organic principles simply to keep them going," wrote Kelly.

"Animals are robots that work."

The book was a major inspiration on the makers of the Matrix films, resulting in the insectoid swarming robots seen on screen.

Rolf Pfeifer of the University of Zurich has tracked a number of robots being developed that imitateinsects, spiders, snakes, lobsters, dogs, monkeys and humans.

He believes that robots inspired by living creatures will be 'adaptable, robust, versatile and agile.'

"Exciting times are ahead of us," he said.

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Whisked Away:
'Tin Whiskers' A Danger To Electronics
by The Mullah

tinwhisker.jpgThey're around a millimetre long and they've caused an estimated US$10 billion in damage -- and environmental regulations are making the problem worse. 'Tin whiskers' are tiny splinters that emerge from the tin solder used in delicate electronics during use.

No-one is quite sure of the cause of tin whiskers -- but the short-circuits they can cause are all too real.

One thing that can prevent their occurance is the presence of lead in tin solder -- but recent EU environmental regulations are eliminating the toxic metal from electronics and now the tin whisker problem is getting worse.

"The EU's decision was irresponsible and not based on sound science," said Joe Smetana, a principal engineer at electronics manufacturer Alcatel-Lucent.

"We're solving a problem that isn't and creating a bunch of new ones."

Similar measures are pending for countries such as Japan, China, South Korea, Argentina, Australia and the United States.

Whilst the regulators believe that phasing out lead is the right thing to do, exemptions are available for special groups such as the military.

But electronics manufacturers are concerned that it will become harder to source parts containing lead -- and a non-toxic solution for tin whiskers is a long way off.

"Over time [the failures] are just going to get worse and worse and worse," said Jim McElroy, executive director of iNEMI, a trade body researching the problem.

"Even if the military is exempt forever, they will be forced to convert because they can't get the components they want. And that will eventually happen across the board."

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Quid Pro Quo:
A New Currency For Space Travellers
by The Mullah

quid.jpgHoliday makers changing currency at Travelex have a new option -- the company has developed a new currency to be used by space tourists.

The company teamed up with the National Space Centre and the University of Leicester to create the QUID -- standing for Quasi Universal Intergalactic Denomination.

It is the first known currency developed for use in space -- an issue that will come up soon when services such as Virgin Galactic being taking tourists into space.

“None of the existing payment systems we use on earth -- like cash, credit or debit cards -- could be used in space for a variety of different reasons," said Professor George Fraser from the University of Leicester.

"Anything with sharp edges, like coins, would be a risk to astronauts while the chips and magnetic strips used in our cards on Earth would be damaged beyond repair by cosmic radiation.

"What’s more, because of the distances involved, it is more than 230,000 miles from the Earth to the moon, chip and pin technology is also out of the question.”

The quids are smooth lozenge shaped pieces of PTFE (polytetrafluoroethylene) -- better known as the coating on non-stick pans.

It was selected for use as it can withstand high temperatures and corrosive chemicals -- and as it can be moulded in any shape, it's easy to create a shape with rounded edges that is safer to handle in zero gravity.

"“We have had to completely rethink the design of the currency from the materials used to the payment mechanisms and aesthetics.

"The currency cannot contain any chemicals that might contaminate the astronauts’ life support systems and must be able to survive the extreme environment of space.

"We also had in mind that the currency should be meaningful for any intelligent life we might encounter in other planetary systems.”

Whilst the idea may seem like whimsy, it may come in handy sooner than you think -- Virgin Galactic plan to start spaceflights in 2009.

“Space tourism is a reality," said Tania Burchell of the National Space Centre.

"There is every chance that in our lifetime we’ll see a week-long loop around the moon in the same holiday brochure as bucket and spade holidays to Spain.”

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Riding On A Sunbeam:
Photonic Drive Could Take Us To Mars In A Week
by Simon Magus

drbae.jpgA researcher using off-the-shelf components has developed a prototype of a Photonic Laser Thruster (PLT) -- a form of propulsion that could cut the time of a journey to Mars from six months to one week.

"This is the tip of the iceberg. PLT has immense potential for the aerospace industry," said Dr Young Bae of the Bae Institute, developer of the prototype.

Dr Bae has found a way to use lasers as an alternative to chemical rockets that can provide sufficent thrust to move a spacecraft.

Previous attempts have been based on using a ground-based laser pointed at a cavity on the craft that amplifies the light.

Dr Bae's concept combines the laser and the amplifying cavity and puts them both onto the craft.

This approach also gets around the limiting effect of the atmosphere.

"Dr Bae's PLT demonstration and measurement of photon thrust is pretty incredible," said Dr Franklin Mead, Senior Aerospace Engineer at the US Air Force Research Laboratory.

"I don't think anyone has done this before. It has generated a lot of interest."

The PLT could also be used to move satellites in orbit, ending the need for them to have their own power supply on board.

Instead they could be nudged using a laser deployed from a central platform in space.

The current prototype can generate 35 milli-Newtons of thrust, enough for certain select missions.

Dr Bae is confident that his drive can be scaled up for larger missions.

"For low thrust -- on the order of milli-Newtons -- applications such as precision spacecraft formations, the thrust that we obtained is sufficient," he said.

"For medium thrust -- on the order of Newtons -- applications, such as spacecraft orbit changing and precision docking, we plan to scale-up PLP engines, which we believe can be accomplished in a few years.

"And for high thrust -- greater than kilo-Newtons -- applications, we plan to investigate new infrastructure technologies, such as in-space nuclear powered laser systems."

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On Second Thoughts:
Scientists Find Source Of Our Second Thoughts
by Simon Magus

fmc.gifA new study has shed light on the processes behind the inner voice that expresses last-minute thoughts in the mind.

"Many people recognize the 'little voice inside the head' that stops you from doing something, like pressing the 'send' button on an angry email," said co-author Dr Patrick Haggard of the University College London.

"Our study identifies the brain processes involved in that last-minute rethink about what we are doing."

Haggard and his co-author Dr Marcel Brass of Ghent University have identified the the dorsal fronto-median cortex (dFMC) of the brain as the source of these second thoughts.

The findings could prove to be a major breakthrough in the field of neuroscience and related disciplines such as psychiatry.

"It is very important to identify the circuits that enable 'free won't' because of the many psychiatric disorders for which self-control problems figure prominently -- from attention deficit disorder to substance dependence and various personality disorders," said Dr Martha Farah of the University of Pennsylvania.

Using MRI scanners, researchers found a correlation between dFMC activity and levels of self-control.

Subjects with strong dFMC activity had more self-control than those with weak dFMC activity.

"This could be a factor in why some individuals are impulsive, while others are reluctant to act," said Dr Haggard.

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A Hot Piece Of Tail:
Squirrels Repel Rattlesnakes By Heating Up Their Tails
by The Mullah

squirrel.jpegResearchers have discovered that the Californian ground squirrel uses a cunning technique to repel rattlesnakes -- it can heat its' own tail up, taking advantage of the fact that rattlesnakes see in infra red.

"It's such a new discovery that it leaves a lot of questions," said Aaron Rundus of the University of California.

The defence mechanism was unknown to biologists until infra red cameras were used to observe ground squirrels.

Confronted with a gopher squirrel that has no infra red vision, the ground squirrel's tail did not heat up.

But when a rattlesnake was put in front of a ground squirrel, the tail heated up and was waggled in front of the snake -- presumably because it makes it look much bigger to the predator.

The technique seems to work, leaving the rattlesnake baffled.

Robotic squirrels with heated tails were used to replicate the effect by researchers.

Squirrels do not see in infra red, but it seems they have evolved to take advantage of the way that their predators see.

For the researchers, the discovery has fundamentally changed the way they look at animal behaviour.

“It taught us to focus on the perceptual world of the animal we’re studying rather than thinking only of human perceptions", Rundus said.

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Infinity In A Grain Of Sand:
3D Microscope That Observes Living Cells
by Simon Magus

nervecell.jpgA new type of microscope is enabling scientists to observe living cells in three dimensions -- allowing them to see processes too obscure for conventional microscopes.

"You can capture cells in their natural environment and see how they respond to changes," said Maryann Fitzmaurice, associate professor of pathology at Case Western Reserve University.

"Otherwise you just get a snapshot in time of a cell."

Traditional microscopes require cells to be stained with dyes before they can often be viewed -- not so with the new microscope.

"Our technique allows you to study cells in their native state with no preparation at all," said Michael Feld, professor of physics at MIT and lead developer of the new microscope.

The microscope uses similar principles to the CT scanners used in medicine to scan the human body.

Many pictures of the cell are taken at different angles -- when combined, they yield a three-dimensional image of the cell.

The new microscope has already been put to work at Harvard Medical School, solving a mystery that doctors have not been able to explain up until now.

During pelvic exams, doctors sometimes apply acetic acid -- also known as vinegar -- which causes pre-cancerous tissue to turn white.

This simple yet useful test works well, in spite of the fact that there has been no explanation of why it works.

Using the new microscope, scientists were able to 'clearly see the changes in different parts of the cell, which is very valuable in understanding this test,' according to Fitzmaurice.

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Steampunk:
The Nanoscale Computer Based On 19th Century Technology
by Simon Magus

diffengine.jpegScientists have proposed a new kind of nanoscale computer inspired by Charles Babbage's 19th century Difference Engine -- an early computing device based on mechanical principles.

"What we are proposing is a new type of computing architecture that is only based on nano mechanical elements," said Professor Robert Blick of the University of Wisconsin-Madison.

"We are not going to compete with high-speed silicon, but where we are competitive is for all of those mundane applications where you need microprocessors which can be slow and cheap as well."

Mechanical computers have been around for a very long time.

The Antikythera device discovered in 1902 has been dated as being around 2000 years old.

More recently, Charles Babbage spent many years attempting to perfect steam-powered mechanical computers in the 19th century.

His efforts were frustrated by the materials science of the day and the ability of fabricators to accurately machine components.

None of his machines were ever completed during his lifetime, although they have been successfully reconstructed in modern times -- proving that they were capable of quite complex computations.

Now scientists inspired by Babbage hope to replicate some of the principles underlying his work at the nano level.

"It's inspired by Babbage's ideas but these days we can scale it down," said Professor Blick.

Crucially, these nano mechanical computers could be invulnerable to electromagnetic pulses deployed offensively, making them valuable for military applications where conventional computer would fail.

"We are quite confident that in a couple of years this work will lead to commercial applications," Professor Blick concluded.

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Let There Be Light:
Printing Solar Panels On Demand
by Simon Magus

panels.jpgScientists have developed an inexpensive plastic solar panel that could one day be printed out on demand.

According to lead researcher Somenath Mitra, current solar panels that use silicon semiconductors are expensive and complex.

"Developing organic solar cells from polymers, however, is a cheap and potentially simpler alternative," he said.

"We foresee a great deal of interest in our work because solar cells can be inexpensively printed or simply painted on exterior building walls and-or roof tops.

"Imagine some day driving in your hybrid car with a solar panel painted on the roof, which is producing electricity to drive the engine."

The new techology uses carbon molecules shaped like snakes, made from a fusion of buckyballs and nanotubes.

Buckyballs trap electrons, but can't make them flow.

Sunlight excites the polymers used to make the plastic in the new panels.

Nanotubes -- which conduct electrons better than copper -- allow the electrons to flow and produce the electrical current.

"Using this unique combination in an organic solar cell recipe can enhance the efficiency of future painted-on solar cells," said Mitra.

"Someday, I hope to see this process become an inexpensive energy alternative for households around the world."

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"Imagine some day driving in your hybrid car with a solar panel painted on the roof, which is producing electricity to drive the engine."

Oops? With solar energy hitting Earth at about 1 Kilowatt per square meter at full sun, this got to be a very tiny car to run on just a few kW. How is this supposed to work, even assuming efficiency of the cells could be tweaked beyond the current 22% of silicon solar cells?

Posted by: Bernd in Japan at July 29, 2007 07:02 AM

There's a remarkable invention that can be used to power an electric car. It's called a battery. Solar panels on the roof don't just have to be a primary source of power -- they could be used to top-up the battery as you drive.

Posted by: Simon Magus at September 24, 2007 05:31 PM

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Eternal Sunshine Of The Spotless Mind:
Drugs That 'Dampen' And 'Erase' Bad Memories
by Simon Magus

eternal.jpgUS and Canadian scientists have found a way to dampen the effect of bad memories or even erase them using drugs.

Canadian researchers injected test subjects with propranolol -- originally developed to treat high blood pressure -- while they were asked to recall a traumatic memory.

One week later, they found that test subjects that received the drug suffered fewer signs of stress when recalling the trauma.

"When you remember old memories they can become 'unstored' and then have to be 'restored,'" said Professor Karim Nader of McGill University.

"As the memory is getting restored, we gave patients a drug that turns down the emotional part of the memory.

"It left the conscious part of the memory intact, so they could still remember all the details but without being overwhelmed by the memory."

The researchers have hypothesised that memories are initially stored in the brain in a malleable, fluid state.

Only later do they become fixed and embedded in the mind.

In a separate study at New York University, researchers claim to have erased a single memory from the brains of rats -- leaving the other memories still intact.

The researchers used a drug called U0126 known to cause limited amnesia.

Skepticism has already been expressed bout the desirability of such treatments.

"One also does not know what effect such a drug could have in the long term," said Professor Chris Brewin of University College London.

"After all, fear reactions are there to protect people from danger in the future."

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Ping!:
Microwaves Turn Plastic Back Into Oil
by The Mullah

microwave.jpgResearchers have developed a means to recycle plastics by turning them back into oil and combustable gas using microwaves.

"Anything that has a hydrocarbon base will be affected by our process," said Jerry Meddick, director of business development at GRC, the firm responsible for the process.

"We release those hydrocarbon molecules from the material and it then becomes gas and oil."

The process requires something a little more sophisticated than the average microwave oven.

A machine using 1200 distinct frequencies within the microwave range is used to target specific hydrocarbon-based materials.

The process transforms plastics into diesel oil and combustable gas.

Anything that isn't hydrocarbon-based is left behind, and any residual water is evaporated during the process.

The new technique has the potential to make recycling easier.

"Take a piece of copper wiring," Meddick said.

"It is encased in plastic – a kind of hydrocarbon material. We release all the hydrocarbons, which strips the casing off the wire."

Once processed, it is much easier to extract the valuable copper for reuse.

According to Meddick, 9.1 kilograms of ground-up tyres produces 4.54 litres of diesel oil, 1.42 cubic metres of combustible gas, 1 kg of steel and 3.40 kg of carbon black.

"Our technology may one day allow the United States to rely on its own resources for the country's energy needs," said Frank Pringle, CEO of GRC.

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Flat Out:
Holographic Video Could Spell The End Of 2D TVs
by Simon Magus

A newly developed holographic display system could make 2D TVs and computer monitors obsolete -- and cost as little as £100.

Researchers at MIT in the US have found a way to create holographic video that would be affordable for consumers to purchase.

Holographic displays have been in development for over twenty years, but have foundered up until now due to excessive cost and complexity.

The latest developments in the field have been helped by the fact that modern computers already have dedicated graphics hardware ideal for creating 3D images.

At the moment, many games create 3D graphics that are then represented on a 2D monitor.

The new display technology would allow users to see true 3D images without the need for glasses.

As well as home entertainment, the new system could be invaluable to industries such as healthcare.

"I'm entranced by the possibilities," said Harold Garner, Professor of Biochemistry and Internal Medicine at the University of Texas Southwestern Medical Center at Dallas.

Professor Garner has developed his own holographic system for looking at medical images such as MRI scans.

"I really look forward to a real device demonstration."

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Music Of The Spheres:
The Sun Is A Musical Instrument
by The Mullah

Magnetic fields in the outer areas around the sun carry waves that sound like a musical instrument.

"These magnetic loops are analogous to a simple guitar string," said Professor Robertus von Fay-Siebenburgen.

"If you pluck a guitar string, you will hear the music."

'Coronal loops' carry acoustic waves in a similar way to how sound is carried through a pipe organ.

Solar explosions called micro-flares generate sound booms which then propagate along the coronal loops.

These blasts send powerful acoustic waves hurtling through the loops at tens of kilometres per second.

Sonic booms of this kind decay in less than an hour and dissipate in the heat of the sun's corona.

The corona is up to 300 times hotter than the photosphere, or the Sun's visible surface.

According to the study, this musical finding could help explain why exactly the corona is hotter.

Professor von Fay-Siebenburgen said: "Studying how plasma is heated to such high temperatures in coronal loops could speed up the technological development of industrial-scale nuclear fusion on Earth."

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Painted Out:
The Paint That Blocks Mobile & Wi-Fi Signals
by Simon Magus

A US company has developed a paint that can block out wireless signals -- rendering mobiles and wi-fi devices useless.

"When wireless signals hit our painted walls, they are reflected back," said Pete Hernandez of paint developers EM-SEC Technologies.

"You can brush it, roll it, or spray it, and it dries in a few hours. When it's applied over a weekend, the only way you'd know about it is your cell phone won't work."

US Government labs have investigated the paint and confirmed it is capable of effectively blocking wireless signals.

The paint was originally developed to assist the US Government in securing sensitive data. It is now available to the public.

Potential users for the paint range from corporate offices to cinemas and theatres.

According to Hernandez, the price of the paint is "comparable to good quality carpet."

That works out at around US$5 a square foot, with the price dropping as the area to be painted grows.

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Is There Life On Mars?:
Giant Water Pool Found On The Red Planet
by Simon Magus

Probes have detected a vast reservoir of frozen water over two miles under the Martian south pole -- there is enough ice there to blanket the entire planet in more than 30 feet of water if it is thawed out.

Scientists used a radar instrument on the European Space Agency's Mars Express spacecraft to determine the thickness and volume of ice deposits covering an area larger than Texas.

"This is the first time that a ground-penetrating system has ever been used on Mars," said Jeffrey Plaut of NASA's Jet Propulsion Laboratory. "All the other instruments used to study the surface of Mars in the past really have only been sensitive to what occurs at the very surface."

Researchers are eager to learn about the history of water on Mars because water is fundamental to whether the planet has ever harboured life.

Channels on the Martian surface suggest the planet was once very wet, in contrast to its present desertified state.

Plaut believes that the amount of water in the past may have been the equivalent of a global layer hundreds of meters deep, while the polar deposits represent a layer of perhaps tens of meters.

"We have this continuing question facing us in studies of Mars, which is: where did all the water go?" Plaut said.

"Even if you took the water in these two ice caps and added it all up, it's still not nearly enough to do all of the work that we've seen that the water has done across the surface of Mars in its history."

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From HD to 3D:
Dreamworks To Produce All Movies In 3D
by The Mullah

As consumers around the world become used to HD content, the entertainment industry is busy preparing for the next wave of technology. From 2009, Dreamworks Animation will release all of their features in 3D.

“I believe that this is the greatest opportunity for movies and for the theatrical exhibition business that has come along in 30 years,” said Jeffrey Katzenberg, CEO of DreamWorks Animation.

Although 3D has been used in the movies before, the technology wasn't up to scratch. But with new digital cinemas, realistic 3D is now feasible.

In the US alone, there are 600 digital screens capable of 3D at present. That number is expected to rise drastically in the future.

“I believe CG animation is in the best position to take advantage of the latest advancement in 3D technology,” said Katzenberg. “Since our films are made digitally, it presents numerous opportunities for our filmmakers.”

Last summer's epic Superman Returns incorporated a number of scenes in 3D. Disney will be releasing Meet the Robinsons in 3D later this month.

James Cameron, the legendary director films such as The Terminator and Titanic, will produce his next movie Avatar in 3D for a premiere in 2009.

"Theater owners are excited by this technology because it not only provides a more special movie going experience but also a meaningful growth opportunity as research suggests more people come to see 3D movies," said Jim Tharp of Paramount Pictures, distributors of Dreamworks movies.

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Strewth!:
Lesbian Koalas Shock Australia
by The Mullah

Researchers observing koalas in captivity have found that many females are spurning male suitors in favour of lesbian sex -- with as many as five other female koalas at a time.

These cute and furry creatures seem to develop this tendency for same-sex love when held in captivity. In the wild, koalas are generally heterosexual.

"Some females rejected the advances of males that were in their enclosures, only to become willing participants in homosexual encounters immediately after," according to a study by researchers from the University of Queensland.

What seems to be baffling researchers is that there is no obvious mechanism to explain why the females are changing their behaviour -- and why male koalas remain resolutely straight.

"Wild koalas brought into captivity clearly display homosexual behaviour on a regular basis. A total of 15 heterosexual and 43 homosexual interactions were recorded in separate animals. Homosexual behaviour was restricted to females only."

One theory posited by researchers for the behavioural change is that the koalas are attempting to relive stress.

Another theory is that the females are attempting to attract males with a display of lesbianism. Just like certain human females perhaps.

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Spear Of Destiny:
Chimps Create Hunting Weapons
by Simon Magus

Chimpanzees have been observed by researchers using spears to hunt bush babies, demonstrating a level of tool use and planning hitherto unsuspected.

"It's not uncommon to have chimps use tools. But to use them in the context of hunting [is unheard of]," said Jill Pruetz, professor of anthropology at Iowa State University.

Pruetz said the practice is commonest among adolescent females who must compete against physically superior males.

"It's a way of accessing protein or meat that is a creative solution to this problem," she said.

The new observations are 'stunning,' according to Craig Stanford, a primatologist and professor of anthropology at the University of Southern California. "Really fashioning a weapon to get food - I'd say that's a first for any non-human animal."

Adrienne Zihlman, an anthropologist at the University of California in Santa Cruz, believes that these new findings support other evidence that female chimps are more likely to use tools than males, are more proficient users of tools, and are crucial to passing that knowledge to others.

"Females are the teachers," Zihlman said, noting that young chimps in Senegal were repeatedly seen observing their mothers making spears and hunting with them.

"They are efficient and innovative, they are problem solvers, they are curious. They are pregnant or lactating or carrying a kid for most of their life. And they're supposed to be running around in the trees chasing prey?"

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Mountains Of The Moon:
Lunar Explorers Advised To Take Up Skiing
by Simon Magus

Lunar astronauts should take up skiing in order to explore the dusty surface of the Moon, according to the scientist Dr Harrison Schmitt -- a former Apollo astronaut and keen skier.

As a member of the 1972 Apollo 17 crew, Schmitt used his personal knowledge of Nordic skiing to glide effortlessly across the dusty lunar surface.

"When you're cross-country skiing, once you get a rhythm going, you propel yourself with a toe push as you slide along the snow," said Dr Schmitt.

"On the Moon, in the main you don't slide, you glide above the surface. But again, you use the same kind of rhythm, with a toe push."

Dr Schmitt had tried to encourage the other two members of the Apollo 17 mission to take up Nordic skiing during training.

"I tried to convince my pilot colleagues to take a few weekends off to learn cross-country skiing because that is the way to move rapidly and easily with little energy expenditure across the surface of the Moon," said Dr Schmitt.

But Eugene Cernan and Ronald Evans refused to take his advice.

"The pilots for some reason got into this bunny hop technique, where they hopped with both feet."

Dr Schmitt said that astronauts would not need skis as the Moon's gravity is one-sixth of Earth's.

"Poles would be nice to have for stability," he said.

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Brain Box:
Scientists Recreate Brain Structures Using Silicon
by The Mullah

Scientists at Stanford University in the US are developing a technique to model the cerebral cortex using silicon chips. As well as helping them understand how the cortex functions, it could also lead to the development of neural implants.

In the 1980s, a microelectronics pioneer called Carver Mead realised that the same transistors used to build silicon chips could be also used to build circuits mimicking the properties of neurons.

"Brains do things in technically and conceptually novel ways -- they can solve rather effortlessly issues which we cannot yet resolve with the largest and most modern digital machines," said Rodney Douglas, a professor at the Institute of Neuroinformatics in Zurich. "One of the ways to explore this is to develop hardware that goes in the same direction."

The Stanford project will model the cerebral cortex using a circuit board with 16 chips. Groups of neurons can be set to have different electrical properties, mimicking different types of cells in the cortex

"We want to be able to explore different ideas, different connectivity patterns, different operations in these areas," said Kwabena Boahen, a neuroengineer at Stanford University. "It's not really possible to explore that right now."

If the research yields positive results, it could lead to the development of implants that can treat disorders of the brain. "The real-time aspect of this technology allows us in principle to interface the silicon cortex with the real cortex or brain," says Gert Cauwenberghs, a neuroengineer at the University of California in San Diego.

"There is the promise, at least in the future, to build a prosthesis to replace some lost motor function or sensory function."

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Land of the Rising Bra Size:
Japanese Scientists Use Stem Cells to Augment Breasts
by Simon Magus

Japanese researchers have developed a new technique that uses stem cells and fat from a woman’s own body to enlarge her breasts. The method results in breasts that look and feel smoother than those augmented with implants.

This is due to the stem cells enabling the fat to grow its own blood supply and therefore becoming an integral part of the breast.

Dozens of women in Japan have received the breast enlargements during trials. Recent trials in Germany mean that the procedure is now legal throughout the European Union, including the UK.

“I’m newly convinced,” said Venkat Ramakrishnan, a specialist in plastic and reconstructive surgery at Mid Essex Hospital Services NHS Trust. “A lot more people have to use it and prove it, but it does seem to have something to it.”

As well as cosmetic breast enlargements, the procedure can also be used for rebuilding breasts after cancer surgery and to treat facial disfigurements.

“Scientists and doctors are starting to believe that the best clues to curing and improving our bodies are inside our bodies in the form of stem cells,” said Cynthia Fox, author of Cell of Cells, a new book about the current craze for stem cell technology.

“Breast augmentation is cosmetic but these cells have the potential to treat diseases ranging from cancer to Alzheimer’s.”

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No Shit:
Building Materials Made From Manure
by The Mullah

Treading in manure is normally an unpleasant experience. But a new technology means that house floors could soon be constructed from cow manure.

Scientists believe that processed and sterilised cow manure could take the place of sawdust in making fibreboard, which is used to make everything from furniture to flooring to store shelves.

Although the resulting product is odourless, there is skepticism over consumer acceptance.

"Is this something you're going to bring into the house?" asked Steve Fowler, an economist with the Composite Panel Association, a trade group representing building material manufacturers.

As the dairy industry expands, farmers find themselves with more manure than they can handle.

"Farmers are having to put more and more money into dealing with manure," said Tim Zauche, a chemistry professor at the University of Wisconsin-Platteville. "This is a huge cost to farmers."

Under pressure from Government, more farmers are installing expensive manure treatment systems known as anaerobic digesters.

The digesters heat treat the manure to deodorise and sterilise it, whilst capturing methane gas produced to generate electricity. The systems also separate out a phosphorus-laden liquid fertiliser from the semi-solid plant residue.

The resulting solids have already been used as animal bedding and potting soil. Agricultural scientists would like to find more uses for something that is seen as waste.

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A New Dimension to Crime:
Organised Criminals Can Copy Holograms Perfectly
by Simon Magus

Buy an expensive bottle of brandy with a hologram guaranteeing authenticity and you'd think you were safe from counterfeiting? Think again.

According to experts, the prevalance of counterfeit merchandise with faked holograms has tripled in the past three years, as the technology is propagated widely.

"The hardest part is peeling the original off," said Jeff Allen, a pioneer of holography. "You can duplicate a hologram, and the duplicate becomes a master you can use for production."

Courtney Martin, investigations coordinator for Trademark Management, believes that fake holograms are everywhere. His company works on behalf of US sports teams that charge up to US$250 for an item of merchandise and rely on holograms to authenticate the genuine article.

"For a trained eye, it used to be easier to tell a fake, but the counterfeits are getting so much better," Martin said.

The US Secret Service regularly encounters fake holograms in the course of their duties. This is due to the tide of counterfeit merchandise coming from China, Korea, India and Russia. But enforcement is rare.

"The Russian mob is a very, very entrepreneurial group," said Mitch Dembin, a former security advisor for Microsoft. "It's tough to enforce US law against counterfeiting overseas, especially in countries where there's not much enthusiasm for intellectual property rights."

Jeff Allen claims that he has always had little faith in holograms as a security measure in the first place.

"People put a lot of comfort and faith in it, but it's really the emperor's new clothes," he says. "They are dual purpose, for display and for security, and people forget the display end of it."

The most efficient way of counterfeiting holograms, mechanical copying, costs a mere $2,500 to produce essentially perfect copies. The profit margins make that feasible.

For example, a counterfeited bottle of whisky costs about £1, and an inexpensive hologram makes it look like the genuine article priced at £12.

"Shiny does not a hologram make," Courtney Martin warned.

"The covert features aren't detectable by the human eye, so unless people are carrying equipment when they buy...they have to trust their eyes."

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Bullet Time:
Camera Tracks Bullets Matrix-Style
by The Mullah

Defence researchers have developed the first ever high-speed camera that can track speeding bullets in flight.

The discovery may lead to 'active armor' that can intercept speeding rounds in the air, or devices that can deflect incoming bullets with rapidly inflating Kevlar airbags.

Developed by Nova Sensors for the US Air Force, the Variable Acuity Superpixel Technology system, or VAST, can track anything slower than a bullet and is likely to find many other applications, from traffic management to robot vision.

Nova Sensors' system uses software that mimics the fovea, a dense region of light receptors at the center of human an animal eyes used for detailed vision such as reading, driving a car or examining objects closely.

High-speed sensors traditionally require subjects to be lit by a strobe or flash -- otherwise they're too dark to detect. In contrast, VAST detects objects by the heat they emit rather than the light. As a result, the VAST sensor 'sees' bullets.

Bullets shot at supersonic speeds heat up and glow in infrared -- making them easy for the sensor to pick out.

"This is truly breakthrough technology in terms of new capabilities for infrared focal plane arrays," said Mark Massie, president of Nova Sensors.

"Mimicking tracking functions of the human visual system will permit future infrared cameras to provide the most salient high-speed imagery in cameras that are very small in size, may be operated on battery power, and produce very low-output bandwidth data," he said.

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Blade Runner Becomes A Reality:
Flying Car By 2010?
by The Mullah

A prototype flying car called the X-Hawk has flown three feet -- raising hopes that a marketable version could be in production by 2010.

Whilst such a car might seem far from reality, Bell Helicopters is taking a serious look -- they are teaming up with inventor Rafi Yoeli’s Urban Aeronautics to explore X-Hawk’s potential.

The flying car has not been conceived merely as a new form of personal transportation, but a new way for rescue and emergency services to reach the stricken and stranded.

The X-Hawk is essentially a helicopter without the rotor and hence the need to roll in order to move left and right. This makes it an ideal urban rescue vehicle, able to manoeuver in tight spaces that would prevent conventional helicopter from gaining access.

“The reality is that we have not been designing helicopters to operate in urban environments,” said M.E. Rhett Flater, executive director of the American Helicopter Society.

“What Rafi is doing is addressing that need to design some kind of vehicle that can operate in an urban environment, that can get close to buildings and skyscrapers, and provide some type of relief for people stranded in buildings."

Yoeli began work on the X-Hawk and Mule in 2000, but Flater said that 9/11 had 'given vertical takeoff and landing vehicles a new priority'.

“The military is learning that they have to fight wars in cities again,” he said. “So we’re looking at unmanned aerial vehicles that can provide reconnaissance. Obviously the next step would be to look for vehicles...that can provide actual relief in urban areas.”

Yoeli's original inspiration was a flying sports car. But the regulatory issues that would have to be resolved before masses of commuters could start travelling to work through the air ended that dream.

But the urge 'to get up vertically' drove him on to develop the X-Hawk.

“You sit in a traffic jam, and everyone gets this urge: I want to get up now, and over this,” he said. “You need a certain kind of machine. I think X-Hawk can do it.”

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Aurum Occultum:
Lost Treasure Found Under Rome
by Simon Magus

Archaeologists have found the lost treasure of Emperor Maxentius -- buried on the Palatine Hill in Rome.

Imperial standards, lances and glass spheres were possibly hidden there before his decisive battle at Milvian Bridge in 312 AD with Constantine.

Marcus Aurelius Valerius Maxentius was Western Roman Emperor from 306 to 312. His defeat by Constantine at Milvian Bridge paved the way for the eventual Christianisation of the Roman Empire.

After Maxentius' defeat and death, his hoard's location was lost. Rcent work by archaeologists uncovered the cache.

Archaeologosts also recently uncovered a grotto on the Palatine Hill believed to be the cave where Rome's mythical founders, Romulus and Remus, were purportedly suckled by a wolf.

Many sites on the hill have been under-explored and parts of the hill are off-limits to the public as efforts are taken to prevent them from crumbling away.

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New Theory Reveals...Oh I Can't Be Bothered, Ask Me Later:
Psychologist Reveals The Causes & Effects of Procrastination
by The Mullah

After 10 years of research on a project that was only supposed to take five, a Canadian psychologist has found that not only is procrastination on the rise, it makes people poorer, fatter and unhappier.

Dr. Piers Steel, a University of Calgary professor in the Haskayne School of Business, is the world's foremost expert on procrastination. His comprehensive analysis of procrastination research has come to some surprising conclusions on the subject.

According to Steel, self-help books get it wrong when they blame perfectionism for procrastination. In fact, procrastination can be explained by a single mathematical equation.

"Essentially, procrastinators have less confidence in themselves, less expectancy that they can actually complete a task," Steel says. "Perfectionism is not the culprit. In fact, perfectionists actually procrastinate less, but they worry about it more."

Other predictors of procrastination include: aversion to tasks, impulsiveness, ability to concentrate, and a person's motivation to achieve.

There is some good news -- willpower can overcome these issues. "The old saying is true: 'Whether you believe you can or believe you can't, you're probably right'," Steel says. "And as you get better at self control, your expectancy about whether you can resist goes up and thus improves your ability to resist."

Whilst procrastination can be a source of humour, the effects can be be harmful. "People who procrastinate tend to be less healthy, less wealthy and less happy," Steel said.

Steel has created a formula based upon what he's named Temporal Motivational Theory -- Utility = E x V / ΓD. The formula breaks down as expectancy a person has of succeeding with a given task (E), the value of completing the task (V), the desirability of the task (Utility), its immediacy or availability (Γ - Greek letter Gamma) and the person's sensitivity to delay (D).

It's still unclear why some people are more prone to procrastination, but evidence suggests it may be genetic. Steel concludes: "Continued research into procrastination should not be delayed, especially because its prevalence seems to be growing."

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Power At Your Fingertips:
New Technology Charges Batteries Without Wires
by The Mullah

We've become used to phones without wires, as well as laptops that can access the internet through the air. But charging these devices still requires them to be tethered with a cable. Two rival technologies could change all that.

The WildCharger can recharge a variety of handheld devices at the same time by placing them on a metallic pad. Sources familiar with the technology say it works by placing a device, fitted internally or externally with an adapter, onto the pad. When contact is made, power is sent between the two.

Rival technology eCoupled transfers energy through the air over short distances to devices one at a time, using what's called adaptive inductive coupling. A wireless adapter senses how much power a specific device's battery needs and adjusts the energy transmitted accordingly.

ecoupled.jpgThe first consumer version of an eCoupled product is a car cup holder that recharges devices set inside it. It only needs to be plugged into the car's 12-volt outlet -- or cigar lighter as it's more commonly known.

Devices using the charger will initially need an add-on, similar to a Bluetooth adapter used for mobile phones. But the next step is a battery pack for phones that does away with the adapter. Eventually it is hoped that manufacturers will integrate the technology from scratch.

If the technology succeeds, it is envisaged that homes, offices, and public spaces will be outfitted with pads or hot spots that would supply power for a host of mobile devices.

splashpad.jpg"The strategy is if I buy a battery, I can charge my laptop just by setting it down on my desk," said eCoupled lead inventor Dave Baarman.

"People are sick of buying a new adapter every time they buy a new electronics device. How many adapters do you throw away when you get a new phone?" said Baarman. "The social aspect of being able to have one adapter that powers all those devices is much more environmentally friendly and universally friendly to the consumer."

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Things Go To Pieces:
Sculpture Highlighting Earth's Fragility Falls Apart
by The Mullah

spaceshipearth.jpgA million-dollar sculpture intended to remind future generations of the Earth's fragility has made its' point, albeit too early for some. After a mere three months on display it has collapsed.

The 175-ton 'Spaceship Earth' lay in ruins at Kennesaw State University after mysteriously falling to pieces last week.

The engraved phrase 'our fragile craft' was still visible in the debris.

"Kind of ironic," said Mary-Elizabeth Watson, a university employee. "I had no idea it was made up of so many pieces."

"How can stone collapse by itself?" said the piece's sculptor Eino. "I'm devastated."

The work was planned originally for San Francisco, which then turned it down. The University of California at Berkeley also rejected it. Kennesaw went on to take it on after a university official met Eino and became interested in his work.

Finnish-born Eino vowed to restore the sculpture to its former glory, with structural modifications. Rebuilding will start as early as next month, he said.

"I want to rebuild it and build it stronger than ever," Eino said.

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Phone Card:
Finns Pay For Public Trainsport With Their Phones
by The Mullah

The city of Tampere in Finland is testing a system that allows people using the city's public transportation network to pay using their mobile phones.

The new system allows passengers to log onto the Internet and load a desired amount to a phone supporting the travel card function.

The ability of turn a mobile into a travel card is due to Near Field Communication Technology or NFC, a short-range wireless technology jointly developed by Sony and Philips.

Future plans for NFC-enabled phones could see them used as house or car keys, tickets for concerts, or even plane tickets.

If NFC-enabled phones take off and gain consumer acceptance, they could in time become a complete electronic wallet, leading to the complete end of conventional money.

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Worming Your Way Into My Affection:
The Brain Parasite That Changes Personality
by Simon Magus

A parasite found in 40% of the world's population could increase a women's attractiveness to the opposite sex but also make men more stupid.

Infection by Toxoplasma Gondii usually occurs when people eat raw or undercooked meat that has cysts containing the parasite, or accidentally ingest some of the parasite's eggs excreted by an infected cat.

The parasite is dangerous to pregnant women as it can cause disability or abortion of the unborn child, and can also kill people with compromised immune systems.

For a long time Toxoplasma infection was thought to be an insignificant in healthy people, but new research by Sydney University of Technology infectious disease researcher Nicky Boulter has revealed its mind-altering properties.

"Interestingly, the effect of infection is different between men and women,'' Dr Boulter writes in the latest issue of Australasian Science magazine.

"Infected men have lower IQs, achieve a lower level of education and have shorter attention spans. They are also more likely to break rules and take risks, be more independent, more anti-social, suspicious, jealous and morose, and are deemed less attractive to women.

"On the other hand, infected women tend to be more outgoing, friendly, more promiscuous, and are considered more attractive to men compared with non-infected controls.

"In short, it can make men behave like alley cats and women behave like sex kittens."

Another study showed infected people were nearly three times more likely to be involved in a car accident as a driver or pedestrian, while other research has linked the parasite to higher incidences of schizophrenia.

"The increasing body of evidence connecting Toxoplasma infection with changes in personality and mental state, combined with the extremely high incidence of human infection in both developing and developed countries, warrants increased government funding and research, in particular to find safe and effective treatments or vaccines,'' Dr Boulter said.

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Save The World, Make Twenty-Five Grand:
$50,000 Bounty Offered If You Can 'Tag' An Asteroid
by The Mullah

asteroid.jpgThe Apophis Mission Design Competition, the brainchild of The Planetary Society, is offering $50,000 (£25,400) to the most innovative design for a mission to 'tag' an asteroid.

Accurate tracking is needed to ascertain if the astronomical body Apophis could collide with the Earth and if a mission to deflect the asteroid is necessary. The asteroid is due to pass very close to Earth in 2029.

As a result of this close encounter, its trajectory will be altered as a result of Earth's gravitational field. There is a small chance that Apophis will be put on a path to collide with us in 2036. Ironically Apophis is named for the Egyptian mythical demon of evil and destruction, supposedly bent on plunging the world into eternal darkness.

"While the odds are very slim that this particular asteroid will hit Earth in 30 years, they are not zero, and Apophis and other near earth objects represent threats that need to be addressed," said Rusty Schweickart, former Apollo astronaut and current head of the near earth object section of the Association for Space Explorers.

The competition requires that the tagging mission to return data by 2017, in time for scientists to determine if a deflection mission is needed. The deadline for proposals is August 31, 2007.

Dan Geraci, a member of The Planetary Society board of directors, has contributed the money to fund the competition. "The time scale may be unknown, but the danger of a near earth object impact is very real," he said. "We need to spur the space community and indeed all people into thinking about technical solutions."

Posted in: Science by bubblejam at 09:14 PM | Comments (2) | Email This Entry

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I think, at this point in our technological developement, the quickest, and possibly the easiest, thing to do would be to drop another NEAR satillite onto the surface (two if it's rotating too fast) of Apophis, and then you basically have a "radar\radio" station directly on the object. "All the easier to track you with, my darling."

Posted by: wil ferguson at July 13, 2007 03:02 PM

would it be possible to make and fix some sort of satillite blanket or net that we could somehow place in the path of the meteor to track?
It sounds bizzare but not impossible.

Posted by: G BAINS at July 29, 2007 01:31 PM

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A Storm In Heaven:
Scientist Find 'Tsunami' On Sun's Surface
by The Mullah

A major solar flare this week created what scientists are calling a solar tsunami. The shock wave, formally known as a Moreton wave, rolled across the hot surface -- destroying two visible filaments of cool gas on opposite sides of the visible face of the Sun. Astronomers using a prototype of a new solar telescope in New Mexico recorded the event taking place.

"These large scale 'blast' waves occur infrequently, however, are very powerful," said K. S. Balasubramaniam of the National Solar Observatory (NSO) in Sunspot, New Mexico, "They quickly propagate in a matter of minutes covering the whole Sun, sweeping away filamentary material."

It is rare to see such an event from a ground-based observatory. It is also unusual that it occurred near solar minimum, when the Sun is at its least active during an 11-year cycle. Sunspot 929 began kicking up flares last Tuesday. When another flare erupted on Wednesday, the NSO's Optical Solar Patrol Network was observing closely.

A shock wave propagated like the rippled from a stone thrown into a pond. This was seen as a brightening from compressed and heated hydrogen gas.

Forecasters say there is a 40% chance over the coming days. Apart from creating phenomena such as the Northern Lights, solar flare activity can interfere with electronic equipment such as orbiting satellites.

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People Power:
Liposuction Fat Used To Make Biodiesel
by The Mullah

One man's liposuction fat is another man's biodiesel. A Norwegian businessman called Lauri Venoy plans to use suctioned fat to create an alternative fuel source. The Jackson Memorial Hospital in Miami is currently in negotiations to turn it's waste fat into a new source of income.

Bio-diesel can be produced from plant oils and/or animal fat, and Venoy sees liposuction as a renewable energy source. More than sixty percent of Americans are overweight. Jackson Memorial currently outputs around 11,500 litres of human fat a week from liposuction operations, which is enough to produce about 10,000 liters of bio-diesel.

Venoy, a Norwegian who has lived in Florida since 1988, currently sells ship-safety equipment and makes biodiesel for trucks and fishing boats from raw material bought from restaurants and ships.

The hospital currently burns the fat from liposuction procedures. It's now building a tank that would sterilise the fat, a prerequisite for selling it to Venoy.

"Maybe we should urge people to eat more so we can create more raw material for fuel," Venoy said.

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Everything New Is Old Again:
Scientsts Unlock Workings of Ancient Greek Computer
by Simon Magus

An international team has unravelled the secrets of the mysterious Antikythera mechanism -- revealed to be a 2,000-year-old computer. Professors from Cardiff University led the team who believe they finally understand the workings of this clock-like astronomical calculator dating from the second century BC.

Fragments of a broken wooden and bronze case containing more than 30 gears were found by divers exploring a shipwreck off the island of Antikythera in 1900. Ever since, scientists have attempted to reconstruct the device in order to comprehend its' purpose.

Investigations of the gears in the mechanism revealed that it can track astronomical movements with remarkable precision. The mechanism could have been used by the ancients to follow the movements of the moon and the sun through the Zodiac, predict eclipses and even recreate the irregular orbit of the moon. The team believe it could have also predicted the positions of some or all of the planets.

Cardiff Professor Mike Edmunds said: "This device is just extraordinary, the only thing of its kind. The design is beautiful, the astronomy is exactly right. The way the mechanics are designed just makes your jaw drop. Whoever has done this has done it extremely well."

The implications of these new findings are that Greek technology was far more advanced than previously thought. No known civilisation created anything comparable in complexity for another thousand years.

Professor Edmunds said: "It does raise the question what else were they making at the time. In terms of historic and scarcity value, I have to regard this mechanism as being more valuable than the Mona Lisa."

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The Terminator:
South Korea Develops Robot Soldier
by The Mullah

Science-fiction movies have portrayed a future where mankind is overthrown by intelligent robots wielding weapons. That vision is now one step closer to reality. Samsung have partnered with a Korean University to produce an armed sentry guard robot that will be placed along the demilitarised zone between North and South Korea.

As well as a 5.5mm machine-gun, the robot is equipped with two cameras with zooming capabilities -- one for use in daylight and one with infrared night vision. A sophisticated pattern recognition system can detect the difference between humans and trees. The robot also comes with a loudspeaker that can be used to broadcast a warning.

The projected cost for the robot is around US$200,000 -- that price is set to drop as they go into mass-production. We can expect to see these robots deployed in increasing numbers as they have several advantages over conventional soldiers. Humans need to be trained, a time-consuming and costly process. They also need food and sleep, as well as occasionally refusing to obey orders.

Robot soldiers need no training -- they can be deployed as needed. They can be on patrol around the clock, all year long. All they need is electricity and regular maintenance. Crucially, they aren't going to to go AWOL or conspire to cause mutiny.

But is it right to allow a robot to pull the trigger? It is possible to reason with a human being and they can make split-second decisions not to fire. A robot has no refinement -- it shoots a target regardless of whether you try to negotiate or not. Could this be the beginning of the end of war as we know it?

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Cleaning Water With 'Rust':
Nanoparticles Can Prevent Arsenic Poisoning
by The Mullah

nanomolecules.jpgRust, olive oil, and a magnet could be all that's needed to remove arsenic from drinking water, according to researchers at Rice University in the USA. This low-tech solution to a serious problem for developing countries comes from basic research on the magnetic behaviour of magnetite nanoparticles.

"Magnetic particles this small were thought to only interact with a strong magnetic field," Rice chemistry professor Vicki Colvin said. "Because we had just figured out how to make these particles in different sizes, we decided to study just how big of magnetic field we needed to pull the particles out of suspension. We were surprised to find that we didn’t need large electromagnets to move our nanoparticles, and that in some cases hand-held magnets could do the trick."

waterpump.jpgIron oxides are known to bind to arsenic, so Colvin's team decided to see if size and therefore surface area made a difference. They found that magnetite particles 12 nanometres in diameter removed nearly all the arsenic from solution, but the same mass of 300 nanometre particles eliminated less than 30% of this toxic substance.

"Arsenic contamination in drinking water is a global problem, and while there are ways to remove arsenic, they require extensive hardware and high-pressure pumps that run on electricity," said Colvin.

The cost of making nanoparticles commercially is very high, which makes the use of this technique expensive. However, the researchers say that making nanoparticles is easy. They created them by dissolving large pieces of rust in heated oleic acid, which can be obtained from ordinary olive oil.

"Our approach is simple and requires no electricity. While the nanoparticles used in the publication are expensive, we are working on new approaches to their production that require no more facilities than a kitchen with a gas cooktop."

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Press Print To Kill:
The Desktop Arms Factory
by The Mullah

The business of making arms is complex and lucrative. Which is why the global arms industry is worth over US$900 billion every year. But new technology could radically change how arms are manufactured. The increasing use of computers to design weapons has spawned a new generation of 'printers' that can manufacture components on demand. With the right machinery, an arms factory could be set up in your own backyard.

Once upon a time, if a designer wanted a new, high-precision part they would construct a design and hand it to a skilled machinist, who would produce a prototype. If more than a handful of handmade parts were needed, yet more tools would be created -- adding expense to an already costly undertaking.

Today, the same designer develops their plan on a computer and then emails the design to a machine shop, which uses an assortment of CNC (Computer Numeric Controlled) machine tools to produce the prototype. And as long as the designer only needs a few dozen (or even a few hundred) parts, the shop just feeds more material into the CNC machines and out come more parts.

All it takes is a few shipping containers, a source of power, and plenty of refined metal ingots to produce high precision parts and designs from a high-technology mobile factory. The ability to manufacture components simply for weapons has already created havoc around the world. One major reason why the AK-47 is a "Weapon of Slow Mass Destruction" is the easy-to-make design. Any country with a manufacturing base at the standards of Russia circa 1947 can pump them out en masse.

The consequences of small jet turbines or piston engines for cheap unmanned planes becoming so simple that anyone can stamp them out and build their own drone air force are unimaginable. This technology is already being put to work by the military. The US Army have developed the Mobile Parts Hospital which instead of keeping a large inventory of spare parts is able to produce replacements on demand.

The weapons designers of tomorrow may choose to build their products entirely from computer-fabricated components. At that point, arms proliferation becomes a matter of design, software, and materials -- rather than the finished systems.

What happens when rogue states sell missiles as digital files rather than physical products on ships which could otherwise be intercepted? In the future, will private designers and companies create designs which anyone can produce? One thing is for sure: with the inevitable rise of computer-based design and fabrication, the genie has already left the bottle.

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A Concrete Solution For Urban Pollution:
Building Materials That Break Down Pollutants
by The Mullah

An Italian company called Italcementi have created a new technology called TX Active that breaks down pollution in the air and can be incorporated into cement, mortar, paints, and plaster. The inventors believe that covering 15% of all visible urban surfaces (painting the walls and resurfacing the roads) with this new coating would cut pollution by up to 50%.

The method for turning something like concrete into a catalyst that acts on pollution is simple. Titanium dioxide added to these materials is activated by light (sunlight or artificial) and decomposes pollution into less harmful substances such as water, nitrates, or carbon dioxide.

"These aren't necessarily 'clean', but from an environmental standpoint they're much more tolerable," said Rossano Amadelli of the Italian National Research Council.

The results so far are promising: A street in Segrate (near Milan) with an average traffic of 1,000 cars per hour, has been resurfaced with the compound, "and we have measured a reduction in nitric oxides of around 60%," says Italcementi's spokesperson Alberto Ghisalberti.

Whilst this technology raises the price of building materials, the inventors believe that the extra expense is not prohibitive. "To transform the facade of a five storey building into a photocatalytic surface would add only 100 or so euros to the cost of a traditional paint or plaster," Ghisalberti estimates.

realizations_arca_clip_image002.jpgSurfacing a street or a pavement is a different story, but still not extreme: blocks using the new technology cost about one-third more than using regular materials.

This new technology also has a major advantage. It not only hastens the decomposition of organic and inorganic pollutants, it also prevents their build-up on surfaces, effectively making buildings self-cleaning.

Richard Meier's new Dives in Misericordia Church in Rome incorporates three concrete white sails, topping out at 26 meters. One of Meier's material requirements was that the whiteness of the sails be durable -- this has been achieved with the new technology.

The same technology has been applied to the new Air France headquarters at Charles de Gaulle airport in Paris, a place with high concentrations of pollution in the air and where a standard white facade would not remain white for long.

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Mob Rule:
American Newspapers Turn To The People
by The Mullah

As newpapers lose readers to the Internet, publishers are constantly looking for ways to reverse the decline. American publisher Gannett (responsible for USA Today and owners of UK local newspaper group Newsquest) are turning to the wisdom of the crowd. Over 90 newspapers are restructuring the way they gather news, using a technique they call 'crowdsourcing' -- making the newspapers more receptive to news coming directly from their readers.

This news revolution has four main goals: To prioritise local news over national news; publish more user-generated content; become 24-hour news operations, in which the newspapers do less and the websites do much more; and finally, use crowdsourcing methods to put readers to work as watchdogs, whistle-blowers and researchers.

At the moment, if a local resident comes to a newspaper with a story idea, if that idea merits further work then that may initiate an investigation that could drag on for months before seeing print. The new crowdsourcing method means that hot topics are more liklely to end up on the front page immediately.

gannett.gif"We've already had some really amazing results with the crowdsourcing element of this," said Jennifer Carroll, Gannett's vice-president of new media content. "Most of us got into this business because we were passionate about watchdog journalism and public service, and we've just watched those erode. We've learned that no one wants to read a 400-column-inch investigative feature online. But when you make them a part of the process they get incredibly engaged."

A prominent example occurred this summer with The News-Press in Fort Myers, Florida. In May, residents of nearby Cape Coral began calling the paper, complaining about the high prices -- as much as $28,000 in some cases -- being charged to connect newly constructed homes to water and sewer lines.

"Rather than start a long investigation and come out months later in the paper with our findings we asked our readers to help us find out why the cost was so exorbitant," said Kate Marymont, the News-Press' editor in chief. "We weren't prepared for the volume, and we had to throw a lot more firepower just to handle the phone calls and e-mails," Marymont said.

MarymontKate.jpgReaders spontaneously organised their own investigation: Retired engineers analysed blueprints, accountants pored over balance sheets, and an inside whistle-blower leaked documents showing evidence of bid-rigging.

"We had people from all over the world helping us," said Marymont. For six weeks the News-Press generated more traffic to its website than "ever before, excepting hurricanes." In the end, the city cut the utility fees by more than 30 percent, one official resigned, and the fees have become the driving issue in an upcoming election.

Maness says that the experience was so encouraging that Gannett will roll out the new approach in all of its newsrooms. "We're going to restructure everything in how we gather news and information. We'll shift our eyes and ears on the ground from reporters to the crowd."

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Hacking The Hack:
Computers Write The News
by The Mullah

papers.gifFirst it was the ATM that made thousands of bank clerks redundant. Then the supermarkets invented self-scanning, making the checkout girl an endangered species. And now the humble journalist is under threat -- computer programs that can automatically write news stories in the blink of an eye have been developed and are in use now.

Come to think of it -- how do you know that the words you are reading now weren't written by a computer?

Thomson have developed a set of specialised programs tailored to write stories for different markets. The programs can write a story within 0.3 seconds of a company making it's financial results public. They can also compare the current results with past stories held in a database, allowing the system to highlight trends -- is the company doing better or worse.

The company denies that the system is designed to cut costs, especially by making flesh and blood reporters redundant.

thomsonlogo.gif“This is not about cost but about delivering information to our customers at a speed at which they can make an almost immediate trading decision,” said Matthew Burkley, senior vice-president of strategy at Thomson Financial. “This means we can free up reporters so they have more time to think.”

The programs have been in use for over six months and have not made any mistakes yet. No job losses have yet been attributed to the system, But surely it is only a matter of time before the technology improves and your humble scribe becomes a relic?

Posted in: Science by bubblejam at 10:22 AM | Comments (0) | Email This Entry

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All Hail Eris!:
The New Planet With A Hippy Name
by The Mullah

The International Astronomical Union (IAU) is not normally renowned as a hotbed of controversy. But when a new object was discovered at the edge of the solar system and named Xena after the eponymous TV series about the exploits of the warrior princess, it precipitated open warfare in what is normally a dull academic discipline. The conflict was further compounded when Pluto was declared to no longer be a planet under a new definition.

According to the rules, planets must have a name from classical mythology. After much controversy, the IAU ratified new names for Xena and her satellite: Eris, named for the goddess of discord and Dysmonia, her daughter associated with lawlessness. Dysmonia is generally assumed to be an oblique reference to Lucy Lawless, the actress who portrayed Xena on screen.

Eris however has an interesting place in the countercultural history of America. In the 1960s, a group of friends created a text entitled Principia Discordia or How I Found the Goddess and What I Did To Her When I Found Her. Traditionally Eris had a bad reputation as the cause of the Trojan War. She had not been invited the wedding of Thetis and Peleus and as revenge threw a golden apple inscribed with the word Kallisti -- meaning 'for the prettiest one'.

A contest ensued and the goddesses Aphrodite, Hera and Athena emerged as the finalists Zeus wanted no part in such a contest and Paris of Troy was instead chosen to select the prettiest goddess. In the end, he chose Aphrodite and received Helen of Troy as his prize. As Helen was already married to Meneleus, the Trojan War ensued.

The modern Erisians however see her as a vital counterpoint to the forces of order or the 'Anerisian' as they term it. The Principia Discordia ended up being incorporated into the comic novel Illuminatus! by Robert Shea and Robert Anton Wilson. The novel was inspired by a simple idea: what if all conspiracy theories are true. Long before the Da Vinci Code, Illuminatus! was talking about secret societies and their possible influence on human history.

Illuminatus! was a cult underground hit and made the reputation of Robert Anton Wilson, who went on to write many books on a bizarre variety of topics. As a result, the cult of Eris went from being merely an intellectual exercise to a full-blown belief system. Today, Erisians or Discordians follow what could be described as both an elaborate joke disguised as a religion, and as a religion disguised as an elaborate joke.

It is for this reason perhaps that Eris came to mind when astronomers were searching for a new name. The business of naming a new planet as well as downgrading Pluto so that it is no longer a planet certainly created strife and discord. The irony is that the war is far from over. A group of astronomers have publicly announced a campaign to get the ruling overturned and restore Pluto to the status of planet.

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Mars Reconnaissance Orbiter sends first snaps home


"The most powerful camera ever sent into space has relayed its first batch of detailed test images of the Red Planet." - reports New Scientist.

"NASA released the first picture, a mosaic of 10 images, taken from an altitude of 2500 kilometres above the southern hemisphere's mid-latitude highlands. It features an old, eroded crater near the centre, with channels on both sides as well as smaller, sharp-rimmed craters and dunes. In places, the landscape is covered in a younger layer of debris, while in others it appears that some of the mantle may have escaped as gas."

NASA says the image "illustrates processes that may have involved water both on ancient Mars (channels and eroded craters) and much more recently in Mars's history (the younger mantle of debris)."

The space agency also released a full-resolution image of one of the tiles (images) from the mosaic, showing the level of detail captured by the camera. That resolution will improve as the spacecraft gets closer to the Martian surface.

Nasa press release

"These images provide the first opportunity to test camera settings and the spacecraft's ability to point the camera with Mars filling the instruments' field of view," said Steve Saunders, the mission's program scientist at NASA Headquarters. "The information learned will be used to prepare for the primary mission next fall."

more on ongoing Mars Project

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h = Qx(12+3s/8) keeps you upright - apparently

In the endless battle to tell you the kind of information you didn't know you need to know, scientists have explained the formula that wearers of high-heeled shoes can use to work out how high they can go – provided they are good in computing while they shop around.

Physicists at the Institute of Physics have devised a formula that, based on your shoe size, tells you the maximum height of heel you can wear without toppling over or suffering agonies. And it is:

h = Qx(12+3S/8)

h is the maximum height of the heel (in cm)
S is the shoe size (UK ladies sizes). This factor makes sure that the base of support is just good enough for an experienced, and sober, high-heel wearer not to fall over

Q is a sociological factor.
It equals px(y+9)xL divided by (t+1)x(A+1)x(y+10)x(L+£20)M

pis the probability that wearing the shoes will help you "pull" (in a range from zero to one, where one is a certainty and zero is stick to carpet slippers). If the shoes are a turn-off, there's no point wearing them...
y is the number of years experience you have in wearing high heels. As you become more adept, you can wear a higher heel. Beginners should take it easy...
L is the cost of the shoes, in pounds. Clearly, if the shoe is particularly expensive, you can put up with a higher heel
t is the time since the shoe was the height of fashion, in months (0 = it's the "in thing" right now). One has to suffer for one's art, and if the shoes are terribly fashionable, you should be prepared to put up with a little pain...
A is units of alcohol consumed. If you're planning on drinking, be careful to give yourself a little leeway for reduced co-ordination.

"Although at first glance our formula looks scary," said Dr Paul Stevenson, of the University of Surrey, who carried out the research. "It's actually pretty simple as it's based on the science you learned at school and which you never thought you would use in real life, in this case Pythagoras' theorem. Applying this to shoes can tell us just how high the heel of the foot can be lifted above the ground."

So now you know…

Posted in: Science by bubblejam at 01:39 PM | Comments (0) | Email This Entry

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Planets Outside Our Solar System Viewed For The First Time


Astronomers using the Spitzer Space Telescope have viewed extra-solar planets for the first time. Previous efforts to discover these alien wanderers have relied upon unexplained variations in the orbital paths of other bodies.

Now astronomers can use infrared photography to view these planets directly. From NASA's press release:

"Spitzer has provided us with a powerful new tool for learning about the temperatures, atmospheres and orbits of planets hundreds of light-years from Earth," said Dr. Drake Deming of NASA's Goddard Space Flight Center, Greenbelt, Md., lead author of a new study on one of the planets.

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The World Saved By...Rock Dust?!


Rock dust yields extra-big vegetables (and might save us from global warming) - according to the Independent newspaper.

This by-product of quarrying could revive barren soil, based on a theory that the soil is naturally mineralised by glaciers during ice ages. As we're many thousands of years away from the next ice age, rock dust is intended to emulate this process.

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13 things that do not make sense

New Scientist has a brilliant article about 13 things that do not make sense -- phenomena that are in defiance of conventional wisdom in the fields of physics, chemistry and biology.

Of the thirteen, perhaps the most intriguing is the tale of the NASA space probes that are accelerating due to some unknown force:

"The resulting acceleration is tiny, less than a nanometre per second. That's equivalent to just one ten-billionth of the gravity at Earth's surface, but it is enough to have shifted Pioneer 10 some 400,000 kilometres off track...So what is causing it?"

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Sci-Fi surveillance technology comes one step closer to reality

In the 1990 action movie Total Recall, passengers on an underground rail system are shown passing through a system that can detect hidden threats such as weapons.

British defence firm Qinetiq have developed millimetre-wave radar that can see through clothing and detect non-metallic weapons such as ceramic knives, as well as drugs and other contraband that airport metal detectors can't spot.

This technology has already been tested at airports and is being evaluated by Eurotunnel -- operators of the undersea tunnel connecting England and France -- as a way of detecting illegal immigrants hidden in vehicles.

Researchers at the firm are also working on a way of sensing human pheromones in sweat, based on the idea that a potential terrorist would literally exude the smell of fear.

Posted in: Science by bubblejam at 10:59 AM | Comments (0) | Email This Entry

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