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Permafrost May Be Hardier Than Thought (1 of 3)

Caption: Image of late-Pleistocene ice wedges exposed in interior Alaska under boreal forest. This image relates to an article that appeared in the Sep. 19, 2008, issue of Science , published by AAAS. The study, by Dr. Duane Froese and colleagues at University of Alberta in Edmonton, Alberta, Canada was titled "Ancient Permafrost and a Future, Warmer Arctic."

Credit: Image courtesy of Duane Froese, University of Alberta

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