The polar vortex is making a return to the forecast, but the counterintuitive weather feature is nothing to fear.

Much of the country will be hit with extreme low temperatures over the next week as a polar vortex sends cold air down from the North Pole. Real feel temperatures throughout the northeast, including ...

With the bitter cold of winter descending upon the U.S., one may question what is responsible for this upcoming period of below-average temperatures. In short, the answer is the polar vortex. But what ...

A polar vortex will plunge Colorado into bitter, sub-zero cold this weekend and could bring up to 10 inches of snow in some parts of the Denver metro, National Weather Service meteorologists say.

With Monday’s snowfall still piled high on lawns and driveways, much of the Mid-Atlantic looks like the inside of a freezer. Thanks to the polar vortex, it feels like one, too. Why is it so cold? The ...

A polar vortex is set to bring weeks of icy temperatures to the Lower Hudson Valley and New York City. “This could end up being the coldest January since 2011 for the U.S. as a whole,” said ...

You may have found yourself randomly wondering aboutUrsus maritimus, Latin for "sea bear," more commonly known as polar bears. The furry mammals are stellar swimmers and can be found in the cold ...