There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
You can actually sharpen the blades on a pencil sharpener by wrapping your pencils in aluminum foil before inserting them.
209
Water is actually naturally blue.
48
The yin-yang pattern's earliest use is in Rome - not China!
125
It's impossible to kill yourself by holding your breath.
22
In 1976, an underachieving Princeton junior undergraduate wrote a term paper detailing how to make a nuclear bomb. He got an "A", but never got his paper back because it was seized by the FBI.
16
Only humans shed emotional tears.
331
