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TIL that before Zachary Taylor coined the term "First Lady", the President of the United States's wife was commonly referred to as the "Presidentress"

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DJJP TIL in 2014, a new species of vine was discovered in Chile that can mimic the leaves of many different host trees. It can change the size, shape, color, orientation, and even the vein patterns of its leaves to match the surrounding foliage. It’s the only known plant that can do this.
4XBeJ TIL: That "the fist of the sender," the personality of a morse code operator in WW2, could identify allies from enemies, their locations & troop movements, and more. The pace and style of their communication allowed expert operators to track them. This was the precursor to modern keystroke dynamics.
V0lZ TIL that 70% of the land in England is still owned by 1% of the population, largely descended from William the Conqueror’s army.
aW8Z TIL Tennis star Novak Djokovic bought the entire supply of Pule cheese, a rare donkey cheese that is only produced in his home country of Serbia. This is also considered the most expensive cheese in the world.
W7J5X TIL that, twice in the 1990s, crews lived in the Biosphere 2 facility to demonstrate how to live in a closed ecosystem, cultivating their fields and making scientific experimentations