Permafrost Line in Quebec Retreats 80 Miles in 50 Years, Study Says

The southern limit of permafrost around the James Bay region in Quebec has moved 80 miles to the north since 1957, according to a new study. Scientists at the Université Laval tracked the northerly retreat of the tundra by examining distinctive, oval-shaped land elevations known as palsas, which form over permafrost.

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