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TIL The Smallpox virus is the first and only infectious human disease to be completely eradicated; the last known case occurred in 1978. Small quantities of the virus still exist in two secure laboratories though; one in the USA and the other in Russia.

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kOjBe TIL that the saying, " It takes 10,000 hours to be an expert" only applies for ultra-competitive expertise. In reality, you can learn and be pretty good at anything within 20 hours.
M7X8A TIL about Fusionism, where from 1894 to 1900 the North Carolina Republican Party and the Populist Party collaborated via electoral fusion to compete against the North Carolina Democratic Party. This coalition would play a pivotal role as being victims of the Wilmington Insurrection of 1898.
oOp7 TIL a German and British aeroplane shot each other down in Norway during WWII. The crew met and helped each other survive. Two of them later visited each other many years after the war was over as friends.
Mpg0 TIL that only law abiding citizens must register firearms with the U.S. DOJ Bureau of Alcohol, Tobacco, Firearms, and Explosives (BATFE). Criminals, or “prohibited persons,” are not required by law to register because it would violate their Fifth Amendment right against self-incrimination.
p8oZQ TIL that Memorial Necrópole Ecumênica is the tallest cemetery in the world with restaurants, concert hall and gardens. It has 32 floors with 150 tombs in each floor. It offers a three year burial option which costs between between $5,900 and $21,000.