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National Geographic Explorer

Season 4 · Episode 11

Testosterone Factor

0.0February 13, 2008

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Episodes

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Episode 1Jellyfish Invasion
Episode 2Science des chiens
Episode 3Ultimate Crocodile
Episode 4Science of Babies
Episode 5Mammoth Mystery
Episode 6Inside the Body Trade
Episode 7Ultimate Viper
Episode 8China's Secret Mummies

Episode 9

Last Christians of Bethlehem

Episode 10Science of Evil

Episode 11Testosterone Factor

Episode 12Alaska's Last Oil

Episode 13Shark Superhighway

Episode 14Tunnel to a Lost World

Episode 15Bog Mummies

Episode 16Science of Cats

Episode 17Gorilla Murders

Episode 18Finding Anastasia