1. Cities - Radiolab

    In this hour of Radiolab, we take to the street to ask what makes cities tick.

    There’s no scientific metric for measuring a city’s personality. But step out on the sidewalk, and you can see and feel it. Two physicists explain one tidy mathematical formula that they believe holds the key to what drives a city. Yet math can’t explain most of the human-scale details that make urban life unique. So we head out in search of what the numbers miss, and meet a reluctant city dweller, a man who’s walked 700 feet below Manhattan, and a once-thriving community that’s slipping away.


    Luis Bettencourt, Diane Galusha, Dr. Robert Levine, Joan Quigley, Sxip Shirey, Nik Sokol and Geoffrey West
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