July 3, 2012 Cities are defined, in large part, by physics. It may not be obvious at first glance. But look closer and you'll see evidence everywhere that humans have used their understanding of physics to design and build the machines we call cities.
<iframe src="http://www.npr.org/player/embed/156135548/156319611" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
October 19, 2011 In the first hour of Talk of the Nation, the political junkie, and lessons on urban design from the blind. In the second hour, the happiest places on Earth, and the World Series 2011.
NPR thanks our sponsors
Become an NPR sponsor