Poor eyesight (myopia) is associated with higher IQ.
232
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Gorillas can catch human colds and other illnesses.
205
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Early American humans hunted car-size armadillos and used their shells for houses.
12
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Tigers can see 6 times better at night than humans.
305
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13