The Titanic is about as long as the Empire State building is tall.
174
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
During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
25
Until President Kennedy was killed, it wasn't a federal crime to assassinate the President.
341
Until the nineteenth century, solid blocks of tea were used as money in Siberia.
80
In 1982, a high school student from Los Angeles, California unscrambled the Rubik's Cube in 22.95 seconds.
60
Pierre Jaquet-Droz, a watchmaker, 240 years ago invented a robot that could write, and the parts could be interchanged to say whatever you want.
13