Extreme cold and snow smacked the Gulf Coast states this week, but the polar vortex may not be to blame.

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...

A polar vortex that has hit much of the U.S. with ice and snow has dealt a glancing blow to Florida, dropping coastal ...

Residents across the country from the Northern Plains to the tip of Maine are bracing for dangerously low temperatures ...

SpaceX has launched a pair of lunar landers for U.S. and Japanese companies looking to jumpstart business up there.

Why herds of manatees are huddling in water near America's power plants - A polar vortex that has hit much of the U.S. in a ...

A polar vortex that has hit much of the U.S. with ice and snow has dealt a glancing blow to Florida and its manatee ...

The National Weather Service (NWS) has issued urgent weather warnings for several counties across the state, with temperatures dropping below freezing and wind chills reaching dangerously low levels.

Much of the country is experiencing a polar vortex this week, including Florida. A polar vortex is a stream of cold air that normally spins around the poles high in the stratosphere. The phenomenon ...

However, the especially low temperatures seen in parts of the US this month can be partially attributed to another phenomenon: the polar vortex. The polar vortex is a low-pressure system of cold ...

At least four people have died as the brutal Arctic blast hit much of the central and eastern U.S. Newsweek's live blog is closed.