Humankind's Greatest Invention

The story of city life and flourishing culture is an ever-evolving one. Uruk, the very first city, formed written language in response to complex trade negotiations. Filth in ancient Rome was tolerated for the sake of extravagance and solidarity. New York City’s vertical skyline sparked disgust at the excesses of "Gotham." In the wake of climate change, Shanghai and others have implemented green policies and are exploring technological solutions. Guest: Ben Wilson, author of "Metropolis: A History of the City, Humankind’s Greatest Invention"