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TIL Pediatric dentists create Game Boy with nitrous oxide feed

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QgbE TIL that there was a real team of Jewish assassins who hunted down Nazi war criminals to avenge the Holocaust.
DQwmv TIL a wide range of historic artifacts from the Titanic have been preserved. From the personal, like perfume oils and a bracelet engraved with a third-class passenger's name, to items from the ship itself, such as a menu from the last meal and a bronze cherub from the grand staircase.
6EaaQ TIL Freddie Mercury protruding teeth was due to having four extra incisors. He refused to remove them for fear that it would affect his singing ability
LQQOv TIL about floating gears which is a method commonly used (although not strictly) by truckers to shift gears without the use of the clutch. The aim is to match engine speed with gear speed and then they should effortlessly mesh together with only 2 fingers.
rNl8d TIL the Greeks used a Hydraulic telegraph during the First Punic War to send messages between Sicily and Carthage.