Scientists Now Think Global Warming Caused Greatest Extinction During At End of Permian
By Elaine Meinel Supkis
This is a schematic map of Pangea at the end of the Permian Era, 250 million years ago. The land masses were, except for at the poles, very hot, the averages at over 100 F. Scientists now think the ocean's north/south circulation shut down and the seas became too tepid and stagnant so 90% of all sea life perished while on the land, 70% of the fauna died and oxygen levels were so depressed, the air was breathable only slightly above sea level.
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