Only humans shed emotional tears.
331
The human brain doesn't stop developing until about 25 years old.
102
Babies crawl an average of 200m a day.
212
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
One human hair can support 3 ounces.
191
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Poor eyesight (myopia) is associated with higher IQ.
232
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252