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TIL that many elevators in Denmark have a button labeled 'I fart', which translates as 'In motion'. When Queen Elizabeth II visited in 1960, strips of tape were used to cover these buttons in any elevators she used.

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nW08B TIL that the first modern battle tank was initially developed by the Royal Navy in WW1. It was conceived as a 'land ship' which is why tanks use nautical terms such as hull, turret, port and hatch.
rNyMy TIL in 1892 Edward Doheny couldn't pay his rent when his daughter died followed by his wife committing suicide. He borrowed money and devised a drilling system using a tree and drilled the first oil wells in Los Angeles becoming an oil tycoon. The movie There Will Be Blood is loosely based on him.
P1nme TIL There is a wasp which lays an single egg inside a ladybird. Once the larva emerges up to 27 days later after feasting upon the ladybirds body, it turns the ladybird into a 'zombie', guarding it as the larva pupates in a cocoon under the ladybird. up to 25% of ladybirds survive this process.
R7Klj TIL Casio was widely accused of false advertising after launching an ad where a hockey player used a g shock as a puck to demonstrate its toughness. However once a TV news channel replicated and verified the ads authenticity it gained popularity amongst the general public.
xZr1 TIL that U.S. President Thomas Jefferson was also: a lawyer, an architect, president of the American Philosophical Society, a speaker of 5 languages, founder of the Univ. of VA., inventor of the swivel chair, and author to what is considered the most important American book published before 1800.