Do you think bioluminescent animals, like anglerfish, are cool? Good news: You glow too, in a similar process called biophoton emission. The chemical reactions in our cells throw off tiny amounts of light that scientists have been able to capture with ultra-sensitive cameras. You can’t see the glow with the naked eye, though—it’s a thousand times weaker than what we can detect.
Update 2021-10-11, 10:42am: We previously said that “you’re bioluminescent too,” but a sharp-eyed reader pointed out that the researchers who described this phenomenon say that it’s similar to, but not the same as, bioluminescence.