A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...
A blast of arctic air from Canada has brought ... a gigantic circular upper-air weather pattern in the Arctic that envelops the North Pole. It's a normal pattern that is stronger in the winter ...
Mapmakers and teachers are re-thinking what to call the gulf of water between Mexico, the United States and Cuba ...
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