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TIL of the Diamond Sutra, the World’s oldest dated printed book

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eXaL TIL the United Arab Emirates seriously consider building an artificial mountain to change the climate
nQPr TIL of a horse named Jim who was used to make diptheria anti-toxin. One day Jim got tetanus and by the time anyone noticed 12 children who received his serum had died, leading to the creation of the 1902 Biologics Control Act.
KYyEa TIL that "rock 'n' roll" had been used since the early 1920s as a blues song lyric meaning sexual intercourse. The term was popularized by a record salesman and DJ to introduce racially charged "rythm & blues" to a white audience.
KGGJ TIL there is a community in Canada that has achieved 97% of their heating through solar power.
wLA57 TIL that during cold war, CIA conducted a $350 million cost secret project in 1974 called Project Azorian to recover a soviet submarine K-129 sunken in 1968 in the Pacific Ocean. It recovered only 1/3rd of the submarine, but the research lead to great advances in deep ocean drilling and mining.