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 ...

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

This winter, the Northern Hemisphere is suffering from cold waves. In South Korea, an unusually prolonged cold wave has ...

The sudden blast may come as a shock to many Americans after a mostly mild start to winter, but that warmth may be partly ...