Uploaded December 2025 | Updated September 2026, 2 weeks ago

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Explore the universe’s strangest possible life—boron creatures, sulfur beasts, crystal minds, ammonia swimmers, methane organisms, and more in this deep dive into alien chemistry.

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Credits:
Strange Lifeforms: The Chemistry of Alien Worlds
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro
3:23What we’ll Explore
5:11 Boron Biochemistry
13:54 Ammonia Worlds
42:01 Sulfur Worlds
46:37 Silicon-Based Life
1:08:08 Phosphorus Life
1:17:25 Crystal Aliens
1:38:40Fluorine Life
1:45:56 Void Ecology
2:09:37 Methane Worlds
2:35:17 Closing Thoughts