1/19: Bitter cold returns to the Midwest; Sochi Olympics ticket sales dented by terror threat

      |After a relatively mild stretch of weather, cold, wintry weather is returning to areas that were hard-hit by a record cold snap less than three weeks ago; and, Ticket sales to the Sochi Olympics have taken a hit, especially among Americans, amid security threats made by terrorist groups who've vowed to attack the Games, as well as the remoteness of its location.

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