An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
On average, there's 100 billion neurons in the human brain.
83
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Poor eyesight (myopia) is associated with higher IQ.
232
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
The human sigh acts as a physiological reset button.
23
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