Polar plunge: Arctic air could impact 250 million Americans

Friday, November 7, 2014 - 08:00 in Earth & Climate

The remnants of a super-typhoon are approaching Alaska, and the storm will disrupt the jet stream, driving a cold blast of air across the U.S. Temperatures will dip below freezing in much of the country, which will likely set off another Polar Vortex like last year's. Dean Reynolds reports from Chicago.

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