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TIL subscription based music streaming for your phone was popularized 140 years ago.

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GYKL4 TIL that the United States has a strategic stockpile of mechanical ventilators, for deployment in a national health emergency
W7pYX TIL about anthropodermic bibliopegy, the practice of binding books in human skin that was popular in the 19th century.
GY88g TIL about the unusual phenomenon of "exploding trees." The trees explode when water in the tree's sap freezes. As the liquid hardens, it expands, eventually bursting the trees open emitting a gunshot-like pop. The exploding trees often bring down others with them, resulting in major damage.
ZpVg4 TIL about Whipping Tom of 1681, a nickname given to a serial spanker in London. He would wait for an unaccompanied woman, grab her, lift her dress and slap her buttocks whiles shouting "Spanko!" before fleeing. Vigilantes would dress in women's clothing and patrol the areas he was known to operate.
BN5k TIL The Roman Emperor Calligula was assassinated by his head body guard after making one too many gay jokes.