The polar vortex, a high-altitude ring of westerly winds that usually keeps Arctic air locked near the pole, is showing signs of unusual weakening. If that circulation falters or collapses, the result ...

To say there’s been a bit of discussion for the last 10 months or so about the polar vortex would be an understatement the size of the Arctic. The phrase is now a permanent part of our wintertime ...

It's already a lot to endure frigid winter conditions, but what happens when we get an unwelcome visit from an even colder spell of air like a polar vortex? "A polar vortex is simply that: a vortex ...