Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
On average, there's 100 billion neurons in the human brain.
83
It takes about 20 seconds for a red blood cell to circle the whole body.
102
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
The human brain doesn't stop developing until about 25 years old.
102
Babies crawl an average of 200m a day.
212
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515