Robert Neuwirth, author of Shadow Cities, finds the world’s squatter sites — where a billion people now make their homes — to be thriving centers of ingenuity and innovation. He takes us on a tour.

Get TED delivered:
Subscribe to the TEDTalks video podcast via RSS >>
Subscribe to the iTunes video podcast
Subscribe to the iTunes audio podcast
Get updates via Twitter >>
Join our Facebook fan page >>

Subscribe to the TED Blog >>