Ocean Acidification to Blame for the Earth's Worst Mass Extinction

April 10, 2015 8:25 AM

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New research suggests ocean acidification and volcanic activity caused the "Great Dying" at the end of the Permian period some 252 million years ago, the most devastating mass extinction event in history.

New research suggests ocean acidification and volcanic activity caused the "Great Dying" at the end of the Permian period some 252 million years ago, the most devastating mass extinction event in history.

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