New Scientist: At least eight times in the last 2.8 million years, the Arctic experienced super-interglacials - periods in which summers there were 5 °C warmer than they are today.
Climate models cannot explain these unusually warm spells, but there could be an unexpected cause: the collapse of the West Antarctic ice sheet (WAIS), on the other side of the planet. The sheet could collapse again as the world warms, perhaps heralding super-interglacial number nine.
The evidence for the super-interglacials comes......
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Loss of Antarctic ice could trigger super-interglacial
Posted by Washington Post: Juliet Eilperin on June 21st, 2012
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