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Thursday, July 24, 2008 |
Thursday, July 24, 2008 |
Photo: Arctic Warming Faster Above Ground Level, Study FindsScientists have long known that the surface of the Arctic is warming twice as quickly as the global average. But a new study has found that the air about a mile above the surface is warming even more quickly than that—which suggests atmospheric circulation plays a far larger role in climate change than previously thought. Photograph by Jeremy Harbeck/NASA
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