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TIL the reason Phoenix can exist in the middle of the desert is because in 1868 Jack Swilling discovered the ruins of a 27,000 sqmi canal system built by the Hohokam. He restarted the canals and today that infrastructure, with modern expansions, waters the city of over a million in the hot desert.

Read more azheritagewaters.nau.edu

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wg91 TIL Robert Kennedy took up a paper route as a young boy. However, he had the family chauffeur driving him, so that he could make his deliveries in a Rolls-Royce.
PK0V TIL that in one lifetime (of ~75 years) humans went from creating the first sustainable light bulb to building the first nuclear power plant (Obninsk).
ymLp TIL to avoid the appearance of nepotism as the nephew of Francis Ford Coppola, Nicolas Coppola changed his name to Nicolas Cage, inspired by the Marvel Comics superhero Luke Cage
OoAp7 TIL 4 teens with vaginal aplasia (born with no vagina) received vagina implants grown in a lab using their own vulva tissue biopsies & pelvic scans. Later, all reported normal arousal, lubrication, intercourse, orgasm; 2 women were able to have the vagina connected to the uterus for reproduction.
QJWDL TIL A Catholic Priest, Georges Lemaître, was first to propose what became known as the Big Bang theory. The origin of the universe, which he called his "hypothesis of the primeval atom" or the "Cosmic Egg." And was first to derive what is now known as Hubble's law.