Two newly identified patterns in the stratospheric polar vortex can send cold air over North America to cause extreme cold ...

The UK has a notably different climate compared with just a few decades ago, the Met Office says.

Stratospheric polar vortex changes still trigger brutal U.S. winter cold snaps and extreme weather despite a warming climate.

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. -- and this study explains why. Researchers ...

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

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...