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TIL of the “Star of the South”, one of the largest diamonds in the world. Discovered by a river in Brazil in July 1853, it was found by a slave girl named Rosa, who turned the diamond over to her master. He rewarded her by granting her freedom, and giving her a pension for life.

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yQO98 TIL the original founders of Tesla were Martin Eberhard and Marc Tarpenning. They created the company's first car, the Roadster, and were eventually ousted by the board of directors.
N7xwM TIL about an actual "Sleeping Beauty" in that there's a 99 year old (100 this coming December) perfectly preserved body of a 1 year old, named Rosalia Lombardo. She died of Pneumonia in 1920 & filled with grief, her father enlisted Alfredo Salafia to embalm her body so she can be preserved forever.
dPbr TIL that Joseph Weizenbaum, one of the founding fathers of Artificial Intelligence, later became one of it’s leading critics when he found his secretary getting very emotionally involved with ELIZA, a chatbot that he himself programmed.
b6X0 TIL in the sixties USA considered detonating a nuclear warhead on the moon to boost morale
VdkG TIL: Since 1995, 7-Eleven has provided more than 6 million coupons to police departments across the country to “ticket” young people “caught in random acts of kindness” dubbed Operation Chill.