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TIL Mustache March is an annual event where men in the US Air Force grow mustaches to honor Air Force legend Robin Olds and as a good-natured protest against facial hair regulations during the month of March. Triple-ace Robin Olds grew a handlebar mustache which did not comply with USAF regulations.

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VwnQ TIL that a 20 year old female and a 23 year old male auctioned off their virginity. Her highest bidder bid $780 000, and his highest bidder bid only $3000
B97x TIL that the average lifespan of a garden ant is 15 years
xVn05 TIL From 1847, Rudolf Wolf started counting sunspots. He peered through a telescope every day, if he could, and recorded the number of spots he observed. Today, all sorts of models use Wolf's sunspot record to predict things like the climate, the orbit of satellites, and the stability of power grids
0wnV5 TIL: there is minimal, short-term, and generally unreliable evidence that flossing might reduce gum inflammation, but no convincing evidence that it promotes plaque removal or prevents tooth decay or dental cavities
7rwkb TIL Russia did not treat beer as an alcoholic beverage until 2011. Before that, beer was classified as a soft drink.