#physics **Of soot** This is neat stuff, but very basic physics. The nanoparticles of soot are nastiest stuff in the world, but humans evolved with it, since they invented fire. That's why I always laughed at the nanoparticle doomer stories.

https://scitechdaily.com/1000x-faster-worlds-fastest-laser-camera-films-combustion-in-real-time/