For the first time in history, more than half the world's population lives in cities. What draws people to them? What changes when people live closer together? Investigating the future of our urban zones, and what cities offer toward a sustainable future. Drawing on four TED talks: Stewart Brand: Is Density Our Destiny? Robert Neuwirth: Why Are Squatter Cities The 'Cities Of Tomorrow'? Ellen Dunham-Jones: Why Do The Suburbs Still Matter? Geoffrey West: What Does Nature Teach Us About Cities?
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