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TIL MIT engineers made the first-ever plane with no moving parts by using electricity to ionize air (2018).

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J1XGB TIL that Queen Elizabeth had the nickname of Gary thanks to Prince William mispronouncing Granny.
0g7A TIL During WWII more people were killed building V2 rockets than were killed by the rockets themselves
R7Ye1 TIL of the 10,000 year clock. Currently being constructed in Texas.
jNGWM TIL Jack Fishman, co-created naloxone in 1961, but it was not widely used for decades. He died in 2013 before seeing the full impact of the crisis and how his invention saved so many lives
v1ZGK TIL that elevators are held up by 6-8 tension cables, and each individual cable can hold the full load of the elevator by itself.