The frigid stream of air that plunged down into the Central U.S. this week is breaking cold records from South Dakota to Texas, with temperatures in the single digits setting records in many ...

The polar dance ... Polar Vortex Blog at Climate.gov, and it’s not the only weather pattern to blame for blasts of cold air. "Weather can happen regardless of what the stratosphere is doing ...

From space, scientists can track everything from sea levels or greenhouse gases to infectious bacteria or water stored ...

It broke century-plus records for cold and snow in some spots – even as much of the nation had a less-than-brutal month.

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

Is this stream of cold air "a polar vortex?" Not in the truest sense of the word, scientists say. This week the actual polar vortex, which lives in the stratosphere, may be helping to steer the ...

Nacreous clouds, also known as "mother-of-pearl" clouds, are high-altitude clouds that form in the stratosphere ... are increasingly threatened by climate change, pollution, and overfishing ...