'Missing' disaster led to all-time worst extinction
There were thought to be five mass extinctions in Earth history. Fossil evidence is now pointing to a sixth – and it's not the human-made Anthropocene
Continue Reading http://www.newscientist.comThere were thought to be five mass extinctions in Earth history. Fossil evidence is now pointing to a sixth – and it's not the human-made Anthropocene
Continue Reading http://www.newscientist.com
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