Topic: Extinction

Experts Reaffirm Asteroid Impact Caused Mass Extinction

March 4, 2010

Responding to challenges to the hypothesis that an asteroid impact caused a mass extinction on Earth 65 million years ago, a panel of 41 scientists re-analyzed data and provided new evidence, concluding that an impact in Mexico was indeed the cause of the mass extinction.

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Researchers Find That Well-Timed Timeout Is More Effective in Wiping Out Memory Response to Fear Stimulus

April 2, 2009

Banishing a fear-inducing memory might be a matter of the right timing, according to new research.

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Biologist quoted by Associated Press

Nov. 1, 2007
Biologist quoted by Associated Press

Whenever the world's tropical seas warm several degrees, Earth has experienced mass extinctions over millions of years, according to a first-of-its-kind statistical study of fossil records.

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