Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
It would take more than 150 years to drive a car to the sun.
569
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
It is impossible to hum if your nose is plugged.
366
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10