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TIL Parts of New York City have a vacuum-driven garbage-collection system that literally sucks trash through pipes under the streets to a central disposal location–and has had it for 35 years.

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Lk6Jr TIL a man named Painless Parker created the Parker Dental Circus, a traveling medicine show with his dental chair on a horse-drawn wagon. He charged 50 cents for each extraction and promised that if it hurt, he would pay the patient $5.
X0VKX TIL On May 7th, 1952, Geoffrey W.A. Dummer first published the concept of the integrated circuit. This breakthrough allowed complex electronic circuits to be built on a single chip, becoming the foundation for modern computers, smartphones, laptops, and countless other electronic devices.
wodLP TIL - in 1945 a +-million landlords were executed for the crime of being landlords, and the land redistributed to the people. There was no economic/real estate/housing crash. Turns out, landlords are unnecessary.
d8AbZ TIL of the International Hair Freezing Contest, a sculpted hair competition held at a resort in the Takhini Hot Springs, Canada. The annual competition involves participants sitting in a hot spring and sculpting their wet hair in cold temperatures. The first place prize is $700 dollars.
X0wl8 TIL: Slaves were sometimes lottery prizes in the past. An example was when Bernard Moore, in quick need of cash, divided his estate into 124 prizes and sold 1840 lottery tickets. You could win a slave, 10 cows, a house, a forge, mill, or wagon. The slaves were the cheapest prizes.