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TIL Prostitutes in the Victorian era would wear pubic hair wigs called merkins so that their clients wouldn't think they had syphilis, which causes pubic balding

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Eg4xx TIL that although the British Double Cross operation captured or turned all German agents operating in Britain during WWII, the German Abwehr was equally successful in Holland with an operation called Englandspiel, capturing all British SOE agents sent to aid Dutch Resistance.
8daa TIL that the Central Intelligence Agency has a memorial wall at headquarters for employees who are killed while working for the US spy agency. Each year the CIA adds stars for deaths; some with names, some without. There are 125 stars as of 2017, eight more than in 2016 and 46 more than in 2002.
mxBrO TIL 50 new shades of colours were created for the anime film Akira. This is due to the fact most of the movie takes place at night, which was a setting animators commonly avoided due to increased color requirements. In total there are 327 shades in the movie
wLjKP TIL that a Sand Tiger Shark embryo will develop teeth and eat its weaker siblings, to ensure only the strongest are born.
6A8J TIL the largest known star (per wikipedia) UY Scuti is 5 billion times the size of the Sun. It would take 2.2 hours to cross its diameter at the speed of light.