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TIL that There is a ranking to measure a country's level of multiculturalism (ethnic, linguistic and religious). The most ethnically and linguistically diverse is Uganda and the most religiously diverse is South Africa.

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6yW7 TIL in 1982 Vincent Chin was beaten to death in a Detroit suburb. The perpetrators were Chrysler plant superintendent Ronald Ebens and his stepson, Michael Nitz. The attack was motivated by U.S. auto manufacturing jobs being lost to Japan, although Chin was Chinese. They served no jail time.
Bgx9e TIL of the Hockey-Falco thesis which says the renaissance realist painters used devices made with mirrors and pinholes to project an image of the subject onto a canvas, the painter would then simply trace over the image to make the painting. It's also used to forge famous paintings.
6gnY TIL Arab inventor al-Jazari created several humanoid robots in the 1200s, including a drink-serving “waitress”, a hand-washing automaton, and a programmable music-playing robot band.
OoL5X TIL the Semipalatinsk Test Site in northeast Kazakhstan is the most-nuked location on earth, with 456 nuclear explosions recorded between 1949 and 1989.
neaKP TIL of "Banner blindness". It is when you subconsciously ignore ads and anything that resembles ads.