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TIL the Toyi-toyi was a dance used in protests in South Africa, especially against apartheid, where crowds would jump from one foot to the other

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xVpn7 TIL that dogs were once used in kitchens to turn spits for roasting meats. The Canis vertigus, or turnspit, was an essential part of every large kitchen in Britain in the 16th century. The small cooking canine was bred to run in a wheel that turned a roasting spit in cavernous kitchen fireplaces.
YpaNA TIL that in 1552 a man accidentally shot himself in the head with a longbow.
b9NeE TIL that there are more living organisms in one teaspoon of soil than there are humans on earth. Happy World Soil Day!
wokp1 TIL Garry Kasparov helped design a chess-playing computer program. Kasparov also makes an appearance as the last computer profile which has to be defeated in order to win the "Kasparov Chess Club"
4yMa TIL that in 1961, one giga FLOPS would have theoretically cost $8.3 trillion USD (adjusted to inflation) whereas today one giga FLOPS costs 8 cents.