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TIL that James Brown starred in a video explaining the use of the Blower Door Test; a test used to evaluate the airtightness of a building

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BrMBK TIL that in 1946, Argentina imported 20 beavers from Canada and stocked a lake with the intention of creating a fur trade. Now, the beaver population is 200k and threatens 16m hectares of Tierra Del Fuego National Park.
VMO44 TIL In 1912, Leonardo Torres y Quevedo invented a chess-playing machine that could solve a king and rook vs king endgame. It didn't always deliver mate in the fewest number of moves, nor always within the 50-move rule limit but it would checkmate the opponent every time.
78ELL TIL that grocery store apples were bread to be extra sweet, and that wild apples are bitter, small and acidic
E1B1w TIL the famous song Singin' In The Rain was published in 1929 and sung by popular singers like Judy Garland and Dean Martin before becoming the centerpiece in the 1952 musical of the same name
lowBB TIL the Girl Scouts had a "Computing Fun" badge in the 1980s that featured the binary code 00111 10011 on its patch. This translated to 7 and 19, and when mapped onto the order of the alphabet stands for G S, the Girl Scouts.