Your thumb is about the same size as your nose.
124
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Our brains have a negativity bias and will remember bad memories more than good ones.
15
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
It takes approximately 12 hours for food to entirely digest.
93