Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
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
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
It takes approximately 12 hours for food to entirely digest.
93
You can't tickle yourself.
29