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 ...

The stratosphere is a powerful place. Perhaps the most influential guitar ever devised is even named after this lofty layer in the atmosphere, which exists between some 10 to 30 miles up in the sky.

The most bone-chilling blasts of cold air experienced in the United States can be blamed on a weather phenomenon that typically dominates a region nearly 3,000 miles away -- all the way north up in ...

The vortex is strongest during the winter and usually weakens or even disappears in the summer. When the polar vortex weakens or even splits, it allows frigid air to escape and push southward toward ...

The most bone-chilling blasts of cold air experienced in the United States can be blamed on a weather phenomenon that typically dominates a region nearly 3,000 miles away -- all the way north up in ...