Frigid air that normally stays trapped in the Arctic has escaped, plunging deep into the United States for an extended visit.

As climate change worsens, the people delivering your food are increasingly exposed to heat, wildfire smoke and other ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

A polar vortex is expected to bring snow and ice to 26 states and D.C., threatening travel with blizzard conditions and ...

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?

The polar vortex has triggered freeze warnings and advisories across Texas, threatening human safety and infrastructure.

A huge swath of the United States was blasted with ice, snow, and wind on Monday as the polar vortex that dipped south over ...

Cold air from the arctic sometimes dips southward across the American plains. What to know about the polar vortex.

including countries like the United Kingdom. But for southern Europe, the chances of cold are very few and, in any case, of short duration. In the presence of a strong Polar Vortex, what happens ...