Your ears secrete more earwax when you are afraid than when you aren't.
229
In Brazil, there's a species of cockroach that eats eyelashes, usually those of young children while they are asleep.
151
The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
7
The Jewel Wasp injects a drug into a cockroach’s brain, turns it into a zombie, rides it like a horse back to its burrow, and then lets its hatched larvae feed on the cockroaches body from the inside.
6
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5