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TIL that in 1966, when asked by a Senate subcommittee member about the dangers of LSD, Timothy Leary stated: “Sir, the motor car is dangerous if used improperly…Human stupidity and ignorance is the only danger human beings face in this world.” The Senator he was replying to was Ted Kennedy.

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5VY1n TIL on the JH-7 fighter jet's maiden flight (12/07/1988), its engines started vibrating so wildly that by the time it reached the airfield, none of its instruments worked anymore since their connections to the panel had all shaken loose. Nonetheless, the pilot managed to land the prototype safely.
XEwLD TIL people are smarter in the summer and fall, to such a degree that it is significantly easier to diagnose dementia in the winter. Other species have similar “seasonal plasticity”.
nePj9 TIL Health Officials are recommending glory holes for casual sex, so that less contact is made to spread the virus.
One7 TIL that Kodak developed a digital camera as early as 1975. It took 23 seconds to record the photo onto a cassette.
69Pym TIL the Westinghouse Electric Corporation built the first industrial Van de Graaff generator. It was called the Atom Smasher, and looked like a light bulb. It was instrumental in the development of practical nuclear science.