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TIL IU on vitamin packages stands for International Unit for measuring amount of substance and ironically this unit is not part of International System of Units

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OogAL TIL In 1872, Victoria Woodhull became the first female presidential candidate. Her candidacy preceded suffrage for women in the U.S. And was a advocate of "free love" long before it was accepted.
XEDVk TIL that there used to be a book store in Paris where you could live for free if you read one book a day and worked two hours pr day
7aOb TIL that Superman was originally a left-wing superhero who fought “crooked” businessmen and unscrupulous politicians, demolished tenement houses, and attacked the KKK and wife beaters.
4kdmX TIL of Frank Hayes, a trainer and stableman never winning a race before . Riding a horse at 20:1 he is the only known jockey to have died mid race, remaining on the horse and still winning.
xex1 TIL the International Space Station usually sees the sun “rise” once every 90 minutes