In many countries, urine was used as a detergent for washing.
17
68 percent of a Hostess Twinkie is air!
37
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
266
Those things you see in your eyes when you stare into space are called Mouches Voltanes, which are also broadly referenced to as Floaters.
9
Since 1982, a radio frequency emanating from Russia has been broadcasting a buzzer-like sound and, periodically, an unknown voice reads orders, names, and numbers. No one knows where exactly it is coming from or what it means.
13
The Gate Tower Building skyscraper in Japan has a highway passing through its fifth, sixth and seventh floors.
7