You can't tickle yourself.
29
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
We share 70% of our DNA with a slug.
218
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The human brain uses approximately as much energy as a 10 watt light bulb.
120