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TIL - The "jungle gym" was invented to teach kids 4d thinking

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kJOP7 TIL that Catallus 16 was a poem that was not publically translated completely until the mid 20th century due to it being deemed to vulgar and obscene for the modern era
MenQV TIL A Wankel Engine doesn't use pistons, but instead a rounded triangle that would spin in a combustion chamber. The last production car to use one came out in 2003, including a model that could use both hydrogen and gasoline in the same engine.
4kg1J TIL about Martha Cothren, winner of the 2006 Veteran of Foreign Wars Teacher of The Year.
woAbP TIL about Manzhouli, a city in northern China, which has a Matryoshka doll-themed district, including stores, a circus, a Russian cathedral and a huge hotel in the shape of a huge Russian doll.
XrRr TIL that “Muphry’s Law” is an intentional misspelling of “Murphy’s Law” which states that anything written to criticize the spelling or proofreading of others will ironically contain editing mistakes as well.