It's a term you hear every couple of winters, when we get stuck in the coldest of cold patterns – polar vortex. But what exactly is it?

The plunging polar vortex is bringing subfreezing temperatures to some of the southernmost points of the U.S. A forming storm ...

It’s a cold air outbreak that some experts say is happening more frequently, and paradoxically, because of a warming world.

The polar vortex is a low-pressure system of cold air that swirls above Earth’s poles. There’s one over the South Pole in ...

The polar vortex of ultra-cold air usually spins around the North Pole, but it sometimes escapes and plunges southward into ...

Winter is upon us. While some people are excited about ice skating, sledding, and snowmen, some are already wishing for ...

A polar vortex is hitting most of the country in the next few days. What does it mean? How to protect yourself and pets ...

Multiple rounds of frigid, arctic air could sweep across the eastern half of U.S. in the coming weeks, ushering in an ...

Brian Blessed, from 'Gordon's Alive,' recounts how he once punched a polar bear on the nose to save its life while trekking ...

The tiny town on a polar bear inhabited island in the high Arctic is not as difficult to get to from Manchester as you might ...

This ambitious $250 million adventure with the Christmas myth has a sprawling scale but there’s very little to cheer about.