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-23:45
- What If We've Already Made First Contact With Aliens?
- Discussed: What If We've Already Made First Contact with Aliens? - with Andrew Siemion
- What If We Became Cyborgs?
- What If Russia Won the Space Race?
- What If There is Life on Venus?
- Discussed: What If There Is Life on Venus? - with Sara Seager
- What If You Were Swallowed by a Crocodile?
- What If Titanosaurs Never Went Extinct?
- What If We Nuked an Asteroid?
- Discussed: What If We Blew Up an Asteroid? - with Bill Nye
- What If We Sunk Our Trash in the Mariana Trench?
Discussed: What If There Is Life on Venus? - with Sara Seager
Sep 18 2020
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