A joint Japanese-European mission to Mercury just made its sixth flyby of the planet, revealing stunning close-ups of the ...
An Arctic blast that began in the northern plains on Saturday spread bitter cold from the Rockies through the East Coast and ...
In the two states where blizzard warnings were in effect ... The polar vortex of ultra-cold air usually stays penned up around the North Pole, spinning like a top. But sometimes it escapes ...
A mass of air called the polar vortex has escaped the Arctic and plunged southward. Some scientists see the fingerprints of climate change.
Sixty-three million Americans are under blizzard warnings as the country ... Meteorologists said a polar vortex spinning across from the North Pole via the jet stream is causing the intense ...