Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
It takes approximately 12 hours for food to entirely digest.
93
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
The human body contains over a billion miles of DNA.
147
Only humans shed emotional tears.
331
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266