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TIL that 2014 was McDonald’s worst year in a decade

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gMK94 TIL A football is a prolate spheroid, and it’s shaped that way because that’s also the shape of an inflated pig’s bladder, which is what the first footballs were made of
NJXP TIL of a quarantined leper colony in Hawaii that, when the patients were cured, was made into an independent county where the patients could stay as residents. To this day no one under the age of 16 is allowed in, and the only visits allowed are officially sanctioned tours.
N7xD8 TIL in 1975, Jack Hetherington, a physics professor at Michigan State University, wrote an entire paper on low–temperature physics and during proofreading realized that he had used “we” instead of “I” everywhere. Too lazy to change anything, he simply listed his Siamese cat Chester as his coauthor.
kMDe TIL of The Smokey Bear effect which was an indirect result of the Smokey Bear campaign. The Smokey Bear campaign has been so successful at preventing forest fires that it has allowed trees and debris to pile up on the forest floor, indirectly resulting in forest fires that burn larger and hotter.
rNyge TIL: In 2013-16, data of around 3 Billion Yahoo! users was leaked, making it the largest data breach in history. Even if the most significant breach occurred in 2013, the company announced it in late 2016.