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# Is There A Simple Solution To The Fermi Paradox?
- URL: https://www.cascadepbs.org/show/pbs-space-time/episode/is-there-a-simple-solution-to-the-fermi-paradox-exhglt/
- Published: 2025-05-19T16:45:49.000Z
- Updated: 2025-08-21T13:47:31.000Z
- Description: Does this also explain why there are no aliens?
- Author: Cascade PBS Staff
- Tags: PBS Space Time, Season 11, Episode 4, #ZZZ_Episode_31d96917-63df-4c5a-9851-609ac21d6c9f, #episode, #ZZZ_Show_ae70f836-13b6-4c9d-b61f-99f7b8bc29eb, #v1.16

Around 2 billion years ago, life had plateaued in complexity, ruined the atmosphere, and was on the verge of self-annihilation. But then something strange and potentially extremely lucky happened that enabled endless new evolutionary paths. The first eukaryote cell was born. This may also explain why there are no aliens.