The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Approximately 25,000 workers died during the building of the Panama Canal, and approximately 20,000 of them contracted malaria and yellow fever.
14
Each king in a deck of playing cards represents a great king from history: spades - King David, clubs - Alexander the Great, hearts - Charlemagne, and diamonds - Julius Caesar.
33
In 1963, the US Military created an artificial ring around Earth, similar to that of the planet Saturn. The ring was made of copper needles and was used for worldwide communications in the case that the Soviets disabled all other methods of communication.
26
In 1537, England's King Henry VII officially declared February 14th the holiday of St. Valentine's Day.
52
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