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Alien Encounters: Earth's Most Alien Places

Bizarre creatures called "extremophiles" are found in some of Earth's most toxic and intense environments. How can studying these life forms help us understand alien life?


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Alien Encounters: Earth's Most Alien Places

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Alien Encounters: Frank Drake and Nick Sagan Meet Again

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Alien Encounters: Will Aliens Have Bodies?


Recent Videos in Aliens & UFOs

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Alien Encounters: Frank Drake and Nick Sagan Meet Again

Recent Videos in Aliens & UFOs
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Alien Encounters: Earth's Most Alien Places

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Alien Encounters: Will Aliens Have Bodies?