Wednesday December 23, 2009
Dinosaur-killing impact set Earth to broil, not burn
Jeff Hecht
New Scientist
The asteroid impact that ended the age of dinosaurs 65 million years ago didn't incinerate life on our planet's surface – it just broiled it, a new study suggests.
The work resolves nagging questions about a theory that the impact triggered deadly wildfires around the world, but it also raises new questions about just what led to the mass extinction at the end of the Cretaceous period.
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