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Documentary

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National Geographic Society
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Explorer (2010)

Genres - Science & Technology, Nature, News [TV]  |   Run Time - 60 min.  |   Countries - United States  |  
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Synopsis

Henry Rollins investigates a so-called "warrior gene" that has been associated with violent behavior. To test the theory, DNA samples are taken from a diverse group, which includes former gang members, MMA fighters, outlaw bikers and Buddhist monks.