After a summer of fasting on land, the bears need to get back to their frozen home to hunt seals and bulk up. But their migration ritual is changing.

Roads in Virginia and North Carolina remained treacherous Thursday as unusually heavy snow led to hundreds of accidents, ...

The polar vortex hit its peak across much of America on Wednesday, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison.

As global warming spreads pests, diseases and toxins, new programs are developing to help medical professionals look at their ...

The arctic outbreak that has enveloped the central U.S. is hitting its peak Thursday as frigid temperatures continue to ...

Climatologists warn the world will likely experience even more severe swings in weather and climate patterns going forward.

Poll reveals widespread concern over climate change among Americans, yet it remains a secondary concern for voters. What's ...

Large parts of the United States and Canada are in the grip of frigid winter weather, with a surge of polar air pushing subzero temperatures and dumping snow down over much of North America. The US ...

In more than 100 locations, the cold could lead to record low temperatures, with a similar number of record cold high ...

A meteorologist debunked a dangerous myth about the polar vortex that's often used to spread disinformation about climate science.