Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Tigers can see 6 times better at night than humans.
305
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
Enamel is hardest substance in the human body.
61
You can't tickle yourself.
29
Babies crawl an average of 200m a day.
212