The polar vortex has only recently entered the popular lexicon as something to fear or shiver at each winter: But what is it? Is it a storm that's heading south from the Arctic or perhaps a new ...

The United States has been experiencing severe winter storms, which is likely to affect more than 60 million people in the country’s east. The ongoing cold spell, which may bring down the mercury to ...

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 and how does it impact our weather? The polar vortex is like a ...

Bitter cold is expected across much of the U.S. this weekend. But what do headlines mean when they say a "polar vortex cold snap" is on the way? The polar vortex is a regular feature of Earth's polar ...