If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
We share 70% of our DNA with a slug.
218
Every human spent about half an hour as a single cell.
144
On average, there's 100 billion neurons in the human brain.
83
Early American humans hunted car-size armadillos and used their shells for houses.
12
You forget 90% of your dreams.
256
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
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24