The north pole of Mars is slowly sinking under the weight of an ice cap that only formed within the past few million years. And, in the process, it's telling us something about what the planet's ...

At the edge of the Arctic in northern Canada, the annual migration of polar bears draws tourists, photographers, and ...

WASHINGTON (AP) — The polar vortex hit its peak across much ... Nuuk since Feb. 12 for a sustained melt, said Danish ice scientist Jason Box. That's “alarming,” said University of Colorado ...