The flushing toilet was invented in 1596, not by Thomas Crapper as most people think, but by Sir John Harington.
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In 1897, Bayer, who is the maker of Aspirin, marketed the drug heroin.
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Leonardo da Vinci could write with one hand and draw with the other at the same time.
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Vikings used the skulls of their enemies as drinking vessels.
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Contrary to popular belief, the first ironclad warships were built by Korea in the 16th century.
14
Canada's new flag, with its maple leaf design, was unfurled in 1965 in Ottawa!
22
During the Black Plague, it was thought that bad smells were the cause of the plague. "Plague Doctors" therefore wore masks with long beak-like noses stuffed with flowers or smoke to hide the smells.
19
There are 92 known cases of nuclear bombs lost at sea.
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