An Arctic blast tied in part to the polar vortex is driving record frigid air south from the Northern Plains toward the Gulf ...

The Arctic Ocean is a vast and pristine expanse that has long been a defining feature of the planet, but now it stands on the ...

Pigmented algae are well adapted to grow on exposed ice in the Arctic as the snowline recedes, raising concerns of a feedback ...

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Scientists warn that the world's sea ice - the frozen ocean water at the North and South Poles - has plunged to a record low.

This winter, with record snow in New Orleans and drought and destructive wildfires in Southern California, has not been ...