You've likely heard the term "polar vortex" virtually every winter since it first entered into popular culture during a bitterly cold January a decade ago. The polar vortex is a whirling cone of low ...

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, researchers found that two specific patterns in the polar vortex, a swirling ...

January usually brings the coldest air of the season to much of the country, and this year has seen its fair share. “The polar vortex is a core of extremely cold air that typically remains near the ...