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104

TIL brass doorknobs disinfect themselves in about eight hours.

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GYK6E TIL about a hip hop duo called Milli Vanilli, whose vocals were entirely recorded by other people. In 1990, the group won a Grammy for Best New Artist but had it revoked after the truth was uncovered. The frontmen of the duo later said that they were duped into the hoax by their producer.
GYa9G TIL why older people are more likely to develop cancer, MMA is an important factor in inducing cancer progression. The elderly's gastrointestinal dysfunction leads to vitamin B12 deficiency and insufficient vitamin B12 to react with MMA, leading to the accumulation of MMA.
Brkxd TIL we only know about MKUltra because while the CIA was trying to destroy all the files on it due to paranoia around Watergate, some of them were sent to the wrong office and not destroyed
g8Ly TIL Montreal has musical swing sets downtown. When in motion, they produce sounds. If you can sync all 3 swings, it creates a song.
XEDGE TIL in 1976, the world's first keystroke loggers were installed on electric typewriters in the US embassy in Moscow, and went undetected for nearly a decade.