Highlights of this day in history include: the Space Shuttle Columbia tragedy; a searing image from the Vietnam War; Ayatollah Khomeini returns to Iran, ending years of exile; actor Clark Gable born.... more 
Highlights of this day in history include: the Space Shuttle Columbia tragedy; a searing image from the Vietnam War; Ayatollah Khomeini returns to Iran, ending years of exile; actor Clark Gable born. (Feb. 1) less 
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Associated Press Videos
Fri, Feb 1, 2013 4:08 AM EST