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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In 1537, England's King Henry VII officially declared February 14th the holiday of St. Valentine's Day.
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Daniel Webster, who ran for president and lost three times, declined the Vice Presidency twice, thinking it a worthless office. Both presidents who offered it later died in office, meaning that if he had accepted, he would’ve become president after all.
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An underwater forest off the coast of Alabama that is 50,000 years old was uncovered by Hurricane Katrina.
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France’s King Louis XIV was offered biological weapons by an Italian chemist. He not only refused, but also paid the chemist an annual salary to never reveal the technology to anyone else.
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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.
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