The distance in miles that isotherms (bands of average temperatures) have shifted northward during the last 30 years. This means that the Arctic—as defined by temperature—is shrinking.
The fraction of Arctic lands governed by the Russian Federation and Canada.
The average annual volume of ice, in billions of tons, shed by the Greenland Ice Sheet from 2003–2006. Over the past decade the overall discharge of icebergs on Greenland has surged by 30 percent.
A Chukchi shaman performing a ritual.
The world’s first Arctic research station, North Pole 1, began its work 75 years ago, on May 21, 1937.
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