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

By trapping trillions of gallons of water behind nearly 7,000 dams since 1835, enough to fill the Grand Canyon twice, humans have redistributed the planet’s mass enough to cause a phenomenon known as ...

Even in a warming climate, brutal cold snaps still hammer parts of the U.S., and a new study uncovers why. High above the ...

The mechanism involves atmospheric waves that bounce between the upper atmosphere and ground level, amplifying weather patterns and making them more extreme. Scientists call this “stratospheric wave ...

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

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

Over the past two centuries, humans have locked up enough water in dams to shift Earth's poles slightly away from the ...

An astrophysicist who spent time doing research at the South Pole gets to the bottom of how things feel at the ends of the ...

In the stratosphere over Siberia, temperatures recently jumped nearly 100 degrees Fahrenheit, shoving the polar vortex off its North Pole perch.

Charlottesville and much of central Virginia were under an extreme heat warning Tuesday, with temperatures predicted to stay ...

A new study challenges the idea that climate change is behind the recent erratic behavior of the polar jet stream, the massive current of Arctic air ...

The Arctic polar vortex is a circle of strong, cold winds that picks up every winter over the North Pole. The vortex is always present, but it strengthens in the winter due to a redistribution of ...