The guys testing this were not safe at all. Still an interesting video. Crazy!
https://youtu.be/Qa-tTMJ8fkA?si=m9AjLbj-AHPn3lD0
The Lightest Solid on Earth (You won’t believe this exists) - YouTube
Aerogel is the lightest and lowest-density solid in the world. It’s a gel composed of 99.8% air. Looking like frozen smoke, this material is almost as light ...
