All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
In the case of an emergency, a Crayola crayon can be used as a candle and will burn for about 15 minutes.
36
There's a company in China that allows you to hire someone to stand in line for you for $3-$5 an hour.
14