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TIL Piggly Wiggly was the world’s first supermarket

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jXxj TIL a gravitational slingshot (of say a space probe) robs the host planet of a very small amount of orbital velocity. Do it enough times and you’d cause said planet to crash into the Sun.
grxmW TIL Canada and the U.S. Celebrate Labour Day on the same date!
QAyX TIL Arnold Palmer, drank iced tea with lemonade at home, and in 1960 at the U.S. Open at the Cherry Hills Country Club, he ordered the drink at the bar. A woman sitting nearby overheard him, and ordered “that Palmer drink”, thus giving the beverage its name.
bdXQ TIL that microwaves are “non-ionising” radiation, meaning they are too low-energy to damage DNA. So your microwave could give you a nasty burn (enough to kill you, even), but only in the same manner as your oven.
5VAl9 TIL that there have been several scientific papers published associating the winning chances in football or soccer matches with playing a short pass based possession game, now known popualrly as tiki taka