Link: http://www.freakonomics.com/2011/02/18/freakonomics-radio-why-cities-rock/
Summary: Edward Glaeser, professor of Economics at Harvad University and author of the book Triumph of the City: How Our Greatest Invention Makes Us Richer, Smarter, Greener, Healthier, and Happier explains the importance of urban cities and the positive effects they produce for our overall wellbeing.
Original Air Date: February 18, 2011
Length: 17 min
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