Powerful polar vortex in the stratosphere brings frigid temperatures to US
A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.
Frozen frenzy: Nearly nonstop winter storms to hit the same parts of the US for days to come
Winter storms are about to blitz through the eastern half of the United States at a frenetic pace that could continue for a ...
DC plane crash updates: 55 victims recovered and positively identified
An American Airlines regional jet went down in the Potomac River near Ronald Reagan Washington National Airport.