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.
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Leonardo Da Vinci predicted the mass use of solar energy as long ago as 1447.
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The Ramses brand condom is named after the great pharaoh Ramses II who fathered over 160 children.
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During World War 1, Harry Houdini took 1 year off performing to help sell war bonds and teach american soldiers how to escape from German handcuffs.
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Two dogs were among the Titanic survivors.
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The first chocolate eggs were made in Germany in the 19th century and remain one of the most popular Easter candies today.
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