Former Beatle John Lennon would have turned 73 on Oct. 9, 2013. Take a look at Lennon's life and career, from The Beatles and beyond.
Born on Oct. 9, 1940, Lennon had recently turned 40 when he was shot and killed by Mark David Chapman in New York City on Dec. 8, 1980.
What's behind the tradition of turning our clocks ahead each spring?
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