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TIL the Rohonc (or Rohonczi) Codex is a document in an unknown language and writing system that emerged in the 19th century, written on paper from the 1530s. Like the more-famous Voynich Manuscript, scholars are divided on the possible origin and meaning, and whether it is a hoax or authentic.

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R7RO4 TIL that until 2013, Shark Tank required 5% equity of all companies - just to pitch in the show. Lawyers at ABC later changed the requirement after Mark Cuban gave them an ultimatum — remove the equity clause or "I'm not coming back."
wLyM6 TIL that when Hattie McDaniel won an Oscar for Best Supporting Actress in Gone with the Wind, the first Oscar won by any black entertainer, she had been sitting at a segregated table at the far wall of the room. The venue had a strict no-blacks policy and had only allowed McDaniel in as a favour.
7n0b TIL that after his execution, Sir Walter Raleigh’s wife had his head embalmed and carried it around with her for the rest of her life
W7MeB TIL that over 600,000 kids pass through the US foster care system annually; some will be adopted, but most will be reunited with their parents.
6EMd8 Hong Kong-based students, Sum Ming Wong and Kin Pong Li designed a door handle that uses light to always keep itself sterilized. The students were inspired by the SARS outbreak in the 2000s and figured that a self-sanitizing door handle is more effective than the chemical-based cleaning processes we are using right now. The handle is made of a glass tube with aluminum caps at each end and the entire handle is covered in a powdered photocatalytic coating made from a mineral called titanium dioxide. The bacteria is decomposed through a chemical reaction that is activated by UV light reacting with the thin coating on the glass tube.