• Nicholas Christakis
• Physician, social scientist, Harvard

• Speaking at TED2010
• February 2010
• Long Beach, CA

The hidden influence of social networks: We're all embedded in vast social networks of friends, family, co-workers and more. Nicholas Christakis tracks how a wide variety of traits -- from happiness to obesity -- can spread from person to person, showing how your location in the network might impact your life in ways you don't even know.