by Patrick Appel

Jonah Lehrer finds a correlation:

While approximately 52 percent of the United States population resides in metropolitan areas with more than 500,000 people, such cities only produce 13% of the players in the NHL, 29% of the players in the NBA, 15% of the players in MLB, and 13% of players in the PGA.

He provides several theories for why this is the case.

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