The power of real life social networks

Science is discovering that the adage " no man is an island" is absolutely true. We need communities to survive as human beings.
Professor Nicholas Christakis, a physician and Harvard University medical sociologist, explores the power of those relationships in his book "Connected, the Surprising Power of our Social Networks and How they Shape Our Lives." He's in town to give a breakfast lecture at the Sutton Place hotel tomorrow,morning and then at the University of Toronto. He joined Laura in studio to discuss some of his findings about how the people we surround ourselves with influence our health and behaviours. And while most of the research involved face-to-face interactions, Christakis also found that people who have smiling photos on their Facebook profiles have more friends, and are more central in their social networks than those who don't..

See mor eof Christakis discussing his research here.