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The polar vortex is weakening unusually early. Here’s what that could mean for the weather
High in the stratosphere miles above the North Pole, an atmospheric fortress of wind normally strengthens quietly throughout autumn. Right now, however,…
Permafrost Is Thawing From the Inside Out—and It’s Unleashing an Entirely New Kind of Landslide
From a helicopter flying over a remote part of Canada’s Northwest Territories, geologist Joseph Young saw something that puzzled him: hillside after…





