Ancient Romans at one time used human urine as an ingredient in their toothpaste.
37
In 1518, a "dancing plague" struck Strasbourg, Alsace, whereby hundreds of people danced fervently in the streets over the period of a month. Some suffered heart attacks or strokes, and many others died from sheer exhaustion. It remains unexplained.
19
The exact cause of death and burial site of Genghis Khan is unknown, because all of the 2000 funeral guests and 800 soldiers were killed in order to preserve the secret.
16
In 1980, the city of Detroit presented Saddam Hussein with a key to the city.
29
The U.S. motto, 'In God We Trust', was not adopted as the national slogan until 1956.
72
Early American humans hunted car-size armadillos and used their shells for houses.
12
The Titanic is about as long as the Empire State building is tall.
174
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79