Condoms were originally made of animal intestines or linen.
347
Poon Lim survived 133 days alone on a raft at sea by fishing, drinking bird blood, and killing a shark with a jug of water.
21
Mosquitoes don't just bite you, they also pee on you.
11
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Your ears secrete more earwax when you are afraid than when you aren't.
229
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
Most of the dust underneath your bed is actually your own dead skin.
251