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  • Academics find source of happiness

  • 00:02:11
  • Reuters
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Academics find source of happiness

Nicholas Christakis, a professor of medical sociology at Harvard Medical School and Political Scientist James Fowler at the University of California, San Diego say the more happy people we know, the more likely we are to be happy.

Reuters | December 23, 2008Watch more videos from Reuters

Tags:. .christakis. .fowler. .sociology. .harvard. .academics