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TIL that the first combat drones appeared in 1930-1940. These were radio-controlled unmanned tanks that could drive, shoot and even self-destruct at command from the outside. Usually they were controlled from another tank

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kJk84 TIL the origin of "sweatshop" was in the 19th century when new technology like sewing machines made mass production possible. "Sweating" was defined by the British parliament as "work carried on for inadequate wages and for excessive hours in insanitary conditions"
J1Xm8 TIL that on April 28th, 1988 the roof of an Aloha Airlines jet ripped off at 24,000 feet mid-air. Clarabella Lansing , a flight attendant, was the only fatality. She was swept out of the airplane near the 5th row seats. Her body was never found .
W16d TIL In Switzerland, Rabies has been virtually eradicated after scientists placed chicken heads laced with a vaccine in the Swiss Alps. The foxes of Switzerland, proven to be the main source of rabies in the country, ate the chicken heads and immunized themselves.
9w8ED TIL: Right-or left-handedness affects sign language comprehension.
yQQXv TIL Doctors use Coca-Cola to dissolve human hairballs (gastric bezoars). Instructions: drink 10 cans within 12 hours.