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

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

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

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

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

Many people across the United States may recall the polar vortex episode of early 2014. For the Midwest, it turned out to be the coldest winter in over 30 years . In Washington, D.C., January 2014 ...

Many people across the United States may recall the polar vortex episode of early 2014. For the Midwest, it turned out to be the coldest winter in over 30 years. In Washington, D.C., January 2014 ...

United States & World U.S. strikes on Iranian nuclear sites show no sign of widespread environmental impact World reacts to U.S. strikes on Iran with alarm, caution — and some praise ...

An international research group has found that extreme cold snaps in the United States are driven by disruptions in a high-altitude Arctic air mass called the polar vortex, Hebrew University of ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America's winter of repeated polar vortex invasions, meteorologists warn. It will stay frozen there all ...