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TIL a McDonnell Douglas DC-10 plane was flown past its design limits, rotating nearly upside down (140°) and reaching speeds the gauges couldn't measure. It also landed 35k lbs/16k kgs over the maximum landing weight. However, the plane soldiered on for 28 more years after repairs.

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OGGm7 TIL that roughly 99% of the world's population will be in daylight on July 8th at 7:15am ET. About 6.4 billion people will be in daytime while 1.2 billion will be in twilight.
g057 TIL that the name of the KA-BAR knife, used by the US Marines and Navy, originated from a trapper’s illegible writing after claiming he used the knife to “kill a bear” in 1923.
6EkBl TIL that hot dogs are responsible for majority of toddler choking deaths. The hot dog has just the right size and consistency to perfectly block the airway.
OkD4 TIL there is a book by Russian scientist Kirill Yeskov, which tells the tale of Tolkien’s Lord of the Rings from Sauron’s perspective, and of the orcs retreat as they are pursued by elves in an attempt to exterminate them.
pRe4 TIL at a launch site in South Dakota, the entrance to the underground missile launch control center is sealed by a blast-proof door painted like a Domino’s Pizza logo, and hand-lettered text on the door reads “World-wide delivery in 30 minutes or less, or your next one is free”.