If the human eye was a digital camera, it would have 576 megapixels.
25
Our brains have a negativity bias and will remember bad memories more than good ones.
15
The average sperm cell swims at 8 inches per hour.
4
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
Tigers can see 6 times better at night than humans.
305
You can't tickle yourself.
29
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24