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Thursday, October 28, 2010 |
Thursday, October 28, 2010 |
Photo: North Pole May Be Ice-Free for First Time This SummerArctic warming has become so dramatic that ice covering the North Pole may melt this summer for the first time in history, according to scientists in the field. Photograph by Ralph Lee Hopkins/National Geographic/Getty Images.
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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