The biggest extinction event in planetary history was driven by the rapid acidification of our oceans, a new study concludes. So much carbon was released into the atmosphere, and the oceans absorbed so much of it so quickly, that marine life simply died off, from the bottom of the food chain up.

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Submitted April 10, 2015 at 05:43AM by madam1 http://ift.tt/1D0zGcg