James Fowler has been studying the power that real and virtual social networks have to influence our behavior. For thousands of years, human beings were conditioned to living in villages with a social sphere of about 150 other people. It's only recently that we have become isolated and anonymous. Online social networks are a return to the village where our actions have consequences on others around us. Fowler's work shows that our life actions, positive and negative, affect the people we know personally, their friends, and even their friends' friends.
About TEDx, x = independently organized event In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized. (Subject to certain rules and regulations.)