Thanks to climate change, thawing permafrost in the Canadian Arctic has revealed the buried remnant of a glacier that’s 770,000 years old.

"The change of seasons causes surface melting far inland from the coastal ice front," glaciologist Christopher Shuman said.

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A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

The U.S. government should emphasize the importance of polar diplomacy amid continuing territorial disputes among Arctic ...

The size of the Antarctic ice sheet can be hard to comprehend. Two kilometers thick on average and covering nearly twice the ...