Behind the historic winter storm that blasted 40 states this weekend, a dome of Arctic air associated with the polar vortex ...

The science pros at TKOR use slush powder to create crushed ice effects for floral displays.

A massive polar vortex has returned to the US and is expected to send half the country into a deep freeze through the rest of the month. Meteorologists said that extremely cold air from Canada is ...

After President Trump pointed to a winter storm as evidence against global warming, North Carolina scientists point to ...

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

Meteorologist Sven Sundgaard predicted this wacky winter weather back in October, and he explains what's happening now and what might happen next.

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south next weekend. But what is ...

A severe winter storm that brought freezing rain, sleet and snow to a large part of the U.S. was intensified by the polar ...

Water, salt, and heat all get mixed within eddies with important climate consequences, but the boundary of an eddy is hard to ...

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is it?