Add Yahoo as a preferred source to see more of our stories on Google. A commuter is seen bundled for the cold in Boston last January. - Craig F. Walker/The Boston Globe via Getty Images/FILE High ...

Add Yahoo as a preferred source to see more of our stories on Google. The term "polar vortex" has been a "rising star" in recent years, according to the National Oceanic and Atmospheric Administration ...

A polar vortex break causes bitter cold across the northern U.S. It’s a regular winter phenomenon, sending Arctic air southward during weakened polar winds. The break results from sudden stratospheric ...

“Polar vortex” sounds cool. It’s like “bomb cyclone” or “firenado.” It seems like the sort of phenomenon that would be responsible for the record-breaking blast of cold, snow and wintry conditions ...

Early forecasts suggest a Super El Niño may disrupt the Polar Vortex. This disruption could bring colder and snowier conditions to North America and Europe. Such events have historically followed ...

The term "polar vortex" has been a "rising star" in recent years, according to the National Oceanic and Atmospheric Administration's polar vortex blog. It's such a star, in fact, that a viral image ...