Hong Kong glows with light. (Mike Clarke/AFP/Getty Images)
Season 6, Episode 39
This week on Freakonomics Radio: could it be that cities are humanity’s greatest invention? Is it possible that, despite their reputation as soot-spewing engines of doom, they make us richer, smarter, happier and (gulp) greener?
Plus: Stephen Dubner speaks with Eric Garcetti, the mayor of Los Angeles.