Opening Days lecture by Prof. Nicholas Christakis highlights power of social networks and argues that human social networks have the power to spread obesity — or happiness — like contagion.
Source: YouTube Vido: http://www.youtube.com/watch?v=8dO6Wwh_tiU
Christakis N, Fowler J. Connected : the surprising power of our social networks and how they shape our lives / Nicholas A. Christakis, James H. Fowler [e-book]. New York : Little, Brown and Co./Hachette Book Group, 2009.; 2009. Available from: NTU Library Catalogue, Ipswich, MA. Accessed September 15, 2011.