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TIL that children's author Roald Dahl singlehandedly took on six German bombers in WWII, developed a medical shunt that saved 3,000 childrens' lives, and was partially the inspiration for James Bond

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AND9g TIL that the act of vomiting involves a complex series of chain-link reactions by your body that connect to a "vomit center" in the brain. The lower digestive system in cases of perceived poisoning shuts down and causes the stomach to convulse in order to bring everything back up the way it came in.
69dZl TIL The earth's circumference is roughly 40,000km because the metre was based off the circumference of earth. The metre was originally a ten-millionth of the distance from the North Pole to the equator, 1/4th of the circumference. Now a metre is defined by the travel of light in caesium frequencies
XEWQr TIL the phrase “revenge is a dish best served cold” expresses the sentiment that revenge that is delayed, and executed well after the heat of anger has dissipated, is more satisfying than revenge taken as an immediate act of rage.
ep0lD TIL mammalian placentas have the genes of both parents. The mother's side of the placenta contains her genes but on the embryo's side are paternally imprinted causing what animal breeders call the "Paternal Grandsire Effect" causing certain traits to skip a generation.
16yoD TIL about Doggyland, Snoop Dog's animated kids show and accompanying rap album, rapping about loving yourself, being polite and respecting others.