The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast.
Space.com on MSNOpinion
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 ...
Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.
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