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TIL In the ’60s, Australia lost a prime minister and could not find him. He disappeared and was never found.

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Lk7ZZ TIL of Richard Carmona who dropped out of high school at 16, joined US Special Forces during the Vietnam War, went on to Medical School after that, later becoming a physician. He would also serve as a SWAT commander for a county sheriff's dept. In 2002, he became the 17th Surgeon General of the US.
4XQjJ TIL in 1963 biologist and animal psychologist James McConnell conditioned planarian flatworms to fear a bright light by electrocuting them. He would then grind up those flatworms and feed them to other worms who had not participated in the experiment. Those worms were afraid of the light.
B8ED TIL Chocolate Milk Was Invented in Jamaica, not by Sir Hans Sloane
ANk8g TIL many Irish weddings include playing the song “Rock the Boat” which starts a group dance where everyone sits on the dance floor, legs splayed in a conga line pretending to row a boat
RK4 TIL that many supermarket oranges have their peels dyed orange–not all oranges’ orange peels turn orange by maturity. Their peels are green despite being ripe, so the FDA allows adding color to prevent negative effects on sales.