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
By weight, Bone is five times stronger than steel.
417
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Babies crawl an average of 200m a day.
212
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
One human hair can support 3 ounces.
191
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139