By weight, Bone is five times stronger than steel.
417
You can't tickle yourself.
29
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
Obsessive nose picking is called Rhinotillexomania.
101
The human sigh acts as a physiological reset button.
23
A person can live without food for about a month, but only about a week without water.
156
Only humans shed emotional tears.
331
If the human eye was a digital camera, it would have 576 megapixels.
25