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TIL "escalator" was originally trademarked by a company but in 1949 ajudged to be public property due to popularity

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AdKn TIL Estonian ID cards have a chip with public-private key pair used to sign documents and vote in elections via the internet. For their 2011 election, 24% of the votes were cast online.
DRkJ TIL Rodney Mullen essentially pioneered street skateboarding by inventing the flatground ollie, and is widely regarded as one of the most influential skaters of all time.
b9LDN TIL: Zoot Suit Riots were a series of anti-Mexican youth riots in Los Angeles that happened in 1943. The suits worn were seen as unpatriotic because of the amount of fabric used, and later became prohibited during the Second World War because of their wastefulness of cloth.
5YYwP TIL prior to 1966, time was locally decided by businesses and municipalities. LJB reigned in the chaos and established Daylight Saving with the Uniform Time Act.
e5y4 TIL a man named William Headline used to be the Washington Bureau Chief of CNN news, and so was described as having “the best name in news”