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TIL Dr. William Halstead, who is considered the father of modern surgery due to his research in multiple surgical fields such as antisepsis to prevent infection, developed addictions to both cocaine and morphine during his career, due to experimenting with the drugs' numbing abilities on himself

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yAmp TIL humans usually get the urge to pee when the bladder is just 1/3 full. But in zero gravity, the urge doesn’t kick in till the bladder is almost completely full. When John Glenn orbited the Earth, his only urination was 27 ounces, seven ounces more than the capacity of the avg human bladder.
DPrP TIL that the Oxford English Dictionary quotes the Beastie Boys nine times
ElLW TIL In the 1950s, full size B-47 nuclear bombers would do a partial backflip called an “Immelman maneuver” and fling their nuclear weapons in a parabolic arc towards the target . This was so they would not be consumed by the 40,000 foot tall fireball from their own weapons.
9wWn7 TIL percentages are reversible. Hence, 6% of 50 is equal to 50% of 6, which is much easier to calculate.
JYDy1 TIL J.R.R.Tolkien had a peculiar sense of humor. Along with his friend C.S. Lewis, he once dressed as a polar bear for a non-costume party and would chase neighbors away dressed as an Anglo-Saxon warrior.