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TIL That Ancient Romans used to bleach their clothing because it contained ammonia, an effective cleaning agent.

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O4ZR TIL that George Lucas was the original owner of Pixar, but after hitting financial troubles from his divorce, sold the company to Steve Jobs for 5 million U.S. dollars.
mxXo TIL that one Japanese company, ykk or Waikeikei Gurūpu, manufactures 90% of all zippers in the world.
947p TIL chewing of the drug Khat is so popular in Yemen that its cultivation accounts for 40% of the desert nation’s water use
4L1b TIL that NASA was concerned that the crew of Apollo 10 would attempt to land on the moon, so they intentionally defueled their LEM so they would be stranded permanently if they did land
KO7Bw TIL The massacre of Hungary in 1242 by Subutai (Mongol General) was so brutal that even in 1250, eight years after the Mongols had left, Hungarian King Bela wrote to Pope Innocent IV that Hungary could not withstand another invasion and would have to surrender to the Mongols if they returned.