Polar vortex maps show where arctic blast is set to freeze the U.S. as far as the Deep South
A polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.
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Map shows where Arctic blast will arrive today - and there's more to come
Millions of Americans are set to feel the chill this week and into January as a ferocious Arctic blast pushes its way into ...
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How The U.S. Claimed Vast New Arctic Territory -- In An Unusual Way
As competition for resources in the Arctic Ocean intensifies ... the international rush to map out claims to the seabed into high gear. Last month, the United States planted its own figurative ...
Map Shows Where 'Dangerously Cold' Arctic Air Will Hit US This Month
Another Arctic blast has been forecast to bring frigid air to a large section of the United States later in January.