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TIL that as far back as 1928, Russia was building analog water computers that were used for highly complex computations, and remained in use up into the 1980’s.

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PYKdG TIL: England use to have a public holiday known as 'Pinch Bum Day' (officially Oak Apple Day). On the anniversary of the restoration of King (1660) it was customary to wear oak leaves, anyone who failed to do so risked getting pinched, pelted with eggs or thrashed with stinging nettles.
jNVoQ TIL Some tree species have “crown shyness” when the uppermost branches don’t touch the nearby trees resulting in gaps that resemble channels or zig-zagging.
b6rdN TIL that in 1961, Italian artist Piero Manzoni famously canned 90 tins of his own feces, titled them "Artist's Shit," and sold them at the price of their equivalent weight in gold.
wLxPo TIL that the theme song for Dirty Jobs with Mike Rowe is an 80's punk rock song by the band Faith No More
kJap1 TIL that actress Zoe Perry, who stars as Sheldon Cooper’s mom in "Young Sheldon," is the daughter of actress Laurie Metcalf, who also stars as Sheldon’s mom, but in "The Big Bang Theory". Despite this family link, Zoe Perry received the role through an audition.