About Cosmos: A SpaceTime Odyssey Season 2, Episode 7 : The Search for Intelligent Life on Earth

Documentary See more Cosmos: A SpaceTime Odyssey seasons and episodes here

A hidden underground network — a collaboration of four kingdoms of life — is revealed. Explore a true first-contact story between humans and beings who communicate with a symbolic language and have maintained a representative democracy for tens of millions of years. Guest Stars: Steve Oatway,

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