This week's cold snap by the numbers

This week's cold snap has brought temperatures to the U.S. that haven't been seen on the continent in decades. Here are some of the most significant numbers created by the freeze.187 million peopleEmily Aaron, 8, enjoys the warmth of the school bus before heading to class at Hutchison Beach Elementary in Panama City Beach, Fla. on Tuesday, Jan. 7, 2014. (Andrew Wardlow/News Herald/AP)Half the population of the U.S. is under a wind chill warning or advisory. Whether it's 55 below ...

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