An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
You can't tickle yourself.
29
Enamel is hardest substance in the human body.
61
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
A human being loses an average of 40 to 100 strands of hair a day.
133
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
The world's shortest man measures only 21.5 inches.
73