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How Earth's atmosphere and climate come together to create a polar vortex
To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...
A severe winter storm that brought freezing rain, sleet and snow to a large part of the U.S. was intensified by the polar ...
If reading winter forecasts doesn't send a chill down your spine, stepping outside will. In some regions of the country, temperatures are dropping below freezing, and some portions of the Midwest are ...
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