Lex Fridman Podcast
#455 – Adam Frank: Alien Civilizations and the Search for Extraterrestrial Life
Adam Frank
And they have not yet, they're not going to, enough of them to exert any kind of these Gaian feedback. So we call that an immature biosphere. But then as time goes on, as life becomes more robust and it begins to exert these feedbacks, keeping the planet in the place where it needs to be for life, we call that a mature biosphere, right?
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