Today in Pictures: Winter Swimming, Newtown Back to School, and Queen Elizabeth

Chinese winter swimmer Gong Shulin finishes a swim in the freezing waters of the Song Hua River in Harbin city, northeastern China, Dec. 17, 2012. More than 500 winter swimmers belonging to a local winter swimming association are carrying out their winter swimming exercise everyday while the outside temperature is about -20 degrees Celsius. They believe the exercise is good for their health. (EPA)

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