Mary Lou Gaughin was drawn to Centralia, Pennsylvania when it had the energy of a city--it was a thriving, happy community. But, 40 years ago, a fire broke out deep underground and changed everything. Joan Quigley, author of The Day the Earth Caved In, wrestles with the question of when ...
One tidy mathematical formula may hold the key to how cities work. This hour, Radiolab takes to the streets to test the numbers...and ask what really makes cities tick.
