These countries post the coldest average temperatures on Earth, but even in places defined by ice and snow, the climate is ...

There are more ways than we knew for the stratospheric polar vortex to get disrupted, shooting cold air southwards across North America.

Rising temperatures in the North Atlantic are slowing vital currents, but a new process in the Arctic could save the day, ...

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 ...

Three factors are combining to increase the likelihood of a weaker polar vortex this winter.

Antarctic sea ice extent has fallen dramatically in recent years – the effects include accelerated ocean warming, faster loss of inland ice sheets and severe impacts on wildlife ...

The polar vortex is a massive, swirling band of cold air that normally traps frigid temperatures around the Arctic. However, recent scientific studies show this vortex is weakening, which could ...

Crowds of tourists bound for Antarctica have brought prosperity to Argentina’s southernmost city, but the boom is also squeezing locals and stressing the environment.

A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation shows the vortex also moved away from the Arctic towards Europe.

More: Powerful polar vortex in the stratosphere brings frigid temperatures to US Polar vortex to blame? Experts say the polar vortex will play a role in next week's cold snap. The polar vortex is a ...