High above the Arctic, scientists are tracking a major change in the atmosphere this January, an event similar to what ...

Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

A huge winter storm has reignited confusion about the polar vortex, the jet stream and what climate change really means for winter weather ...

Strong winds, frigid temperatures, and snowfall moved across several states during the course of the last few days, and for ...

Michigan is experiencing frigid temperatures and heavy snow due to a dip in the jet stream, not the polar vortex. The polar vortex is a large-scale cyclone of cold air that typically stays far north ...

A winter storm descending on the US is expected to deliver heavy snow and ice to more than 150 million people across roughly ...