For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
If two pieces of metal touch in space, they become permanently stuck together.
808
Denmark has twice as many pigs as there are people.
66
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
By weight, Bone is five times stronger than steel.
417
The average sperm cell swims at 8 inches per hour.
4
Alaska is the only state that can be typed on one row of keys on a QWERTY keyboard.
147