Social maps that reveal a city's connections — and separations

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DECEMBER 12, 2014 TODAY’S TED TALK Dave Troy: Social maps that reveal a city's connections — and separations 05:28 minutes · TEDGlobal 2014 Every city has its neighborhoods, cliques and clubs, the hidden lines that join and divide people in the same town. What can we learn about cities by looking at what people share online? Starting with his own home town of Baltimore, Dave Troy has been visualizing what the tweets of city dwellers reveal about who lives there, who they talk to — and who they don’t. Watch now »     PLAYLIST OF THE DAY Adventures in mapping Maps don’t just tell you which street to turn left on. They convey information that shapes our lives -- and whisk our imaginations to new lands. See what we mean ... Watch » 12 talks · Total run time 2:35:07