The average sperm cell swims at 8 inches per hour.
4
The human brain is more active during sleep than during the day.
28
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
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
On average a woman has 4 sexual partners in her lifetime.
-143
We share 70% of our DNA with a slug.
218