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TIL that Luis Alvarez, designed the implosion mechanism for the "Fat Boy" plutonium bomb also discovered the theory that an asteroid killed the dinosaurs

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16n7r TIL about Jakob von Washington, a distant relative of George Washington, who was born in the Netherlands, fought against Napoleon, served as a Lieutenant General in the Bavarian Army and signed a treaty with the Duke of Wellington as a representative of Bavaria at Waterloo.
nemGr TIL after the attack on Pearl Harbor, the US government overprinted banknotes to have the word ‘Hawaii’ marked on them. In case of a Japanese Invasion, the US could immediately declare any Hawaii-stamped notes worthless, due to their easy identification.
oBwao TIL Ultra-high-temperature pasteurized milk packaged in a sterile container, if not opened, has a typical unrefrigerated shelf life of six to nine months.
vPBp8 TIL: Abraham Lincoln told his biographer, friend, and law partner of 18 years, William Hearndon, how he had been infected with syphilis in 1835 or 1836 (by a prostitute). Hearndon, believing both Mary Todd and Abraham Lincoln had syphilis, suspected it in the premature death of 3 Lincoln children
lo6L5 TIL Jack, a baboon, was employed to change rail signals. After initial skepticism, the railway decided to officially employ the baboon once his job competency was verified. He was paid twenty cents a day, and 1/2 a bottle of beer each week. In his nine years of employment, Jack never made a mistake.