A dramatic blast of cold air may be coming for the United States in late January, courtesy of the polar vortex. Here's what could happen.

High above the Arctic, scientists are tracking a major change in the atmosphere this January, an event similar to what ...

In the coming weeks, cold air will continue for parts of the U.S. thanks to the influence of the polar vortex.

Ben Gelber, a meteorologist for NBC4 in Columbus, Ohio, and a Pocono native, said the polar vortex is a large, circular pool ...

A major polar vortex is about to hit the US and could bring weeks of frigid temperatures for millions, with even a chance of ...

Repeated shots of cold air can be expected through the end of the month and into early February, according to AccuWeather.com ...

Cold temperatures are expected to last through the end of the month — and forecasters say that there's a potential for snow ...

It was 11:14 p.m. on a crisp, Thursday in December and Santa was missing. Oh, he was around. Everyone had seen him. But he was unrecognizable. It was an emergency here at the North Pole. Because this ...

Operation North Pole went off without a hitch over the weekend, as hundreds of volunteers and first responders teamed up to give children battling serious illnesses a Christmas they'll never forget.

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(The Conversation) – When Santa is done delivering presents on Christmas Eve, he must get back home to the North Pole, even if it’s snowing so hard that the reindeer can’t see the way. He could use a ...