US weather: Dangerous -42C 'Arctic air' to cause devastating chill -'Frostbite in 10-mins', Weather, News

Bitter cold wind chills proving deadly, hindering airlines, power grids, schools - CBS News

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Deadly cold overspreads US with freezing temperatures felt from border to border

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Arctic blast leaves over 110 million under wind chill warnings

Arctic freeze continues to blast huge swaths of the US with sub-zero temperatures

US winter storms: Dangerous Arctic freeze will linger through midweek