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December 6 2012

Did Bacteria Fuel World's Worst Extinction?


SAN FRANCISCO Nickel-eating bacteria may have worsened the world's worst mass die-off by producing huge amounts of methane, a new study suggests.

The study is the latest attempt to explain how most of the world's ocean species died off in just a few hundred thousand years at the end of the Permian era, about 250 million years ago. The researchers presented their findings Tuesday (Dec. 4) here at the annual meeting of the American Geophysical Union.

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