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TIL Oregon is the only U.S. state with a 2-sided flag.

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1OaP TIL that Nazi Germany had a research programme (Wunderwaffe) that included a stealth bomber, night vision, a 1,500 ton super tank, submarine aircraft carrier, an x-ray gun, and a satellite with a concave mirror to “make an ocean boil or burn a city”.
DQN4j TIL English has been the first/native language of every US president except one. President from 1837 to 1841, Martin Van Buren's native/first language was Dutch.
OoXMa TIL For unknown reasons, people who smoke and people who are taking oral contraceptives, are less likely to develop canker sores.
R5xYl TIL that in the 1750s, doctors used tobacco enemas, believing they could cure various diseases. When the practice was debunked, the phrase “blowing smoke up your ass” was born.
BgrWD TIL Baron Friedrich von Steuben was known for his bravery and the discipline and grit he brought to the American troops during The Revolutionary War, was openly gay