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North America deep freeze hits east

A brutal blast of arctic air has settled over eastern North America, bringing dangerously low temperatures not seen in decades. Rajini Vaidyanathan reports from Washington.

A brutal blast of arctic air has settled over eastern North America, bringing dangerously low temperatures not seen in decades.

About half of the US population has been placed under a wind chill warning or cold weather advisory.

Rajini Vaidyanathan reports from Washington.