Every human spent about half an hour as a single cell.
144
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
You forget 90% of your dreams.
256
Early American humans hunted car-size armadillos and used their shells for houses.
12
The human brain doesn't stop developing until about 25 years old.
102
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Human hair and fingernails continue to grow after death.
7
It takes approximately 12 hours for food to entirely digest.
93