In many countries, urine was used as a detergent for washing.
17
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
266
The Gate Tower Building skyscraper in Japan has a highway passing through its fifth, sixth and seventh floors.
7
If you dropped an aerodynamic object (such as a bullet) from the Empire State Building, you could kill someone.
132
New York's Central Park is nearly twice the size of the entire country of Monaco.
42
Japanese engineers were asked to redesign the front end of the Bullet Train because it carried enough speed to create a sonic boom whenever it exited a tunnel. Residents could feel the blast from miles away.
11
The Band-Aid was originally made for the inventor's wife, who often cut and burned herself while cooking.
6

