Vikings used the skulls of their enemies as drinking vessels.
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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 oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
London's Pall Mall became the first street lit by gaslight in 1807!
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In 1542, French aristocrat Marguerite De La Rocque survived being marooned for 2 years alone on a remote island off the coast of Quebec.
12
Approximately 25,000 workers died during the building of the Panama Canal, and approximately 20,000 of them contracted malaria and yellow fever.
14
The life expectancy in 1900 was just 47 years.
49