Enamel is hardest substance in the human body.
61
Gorillas can catch human colds and other illnesses.
205
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
On average, there's 100 billion neurons in the human brain.
83
If the human eye was a digital camera, it would have 576 megapixels.
25
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Obsessive nose picking is called Rhinotillexomania.
101