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TIL during the industrial revolution, toxic metals such as Copper Arsenite, Red Lead and Vermillion (Mercury) were used as food colouring for everyday foods like milk, cheese and tea.

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M9lm TIL scientists have been studying Ketamine, a recreational, dissociative drug, as a cure for depression. It is often discredited by the public due to being known as a horse tranquilizer.
lWBB TIL A plot to detonate a car bomb in Central London was foiled after one of the cars involved was towed for being parked illegally.
oR9W8 TIL of the Iffland-Ring, which is given to the “most significant and most worthy actor of the German-speaking theatre”. It is only passed along when the current holder dies, and the successor must be included in the current holder’s will.
8KWX TIL that there are 20 planets with a rating of 80+ habitat conditions, meaning that we can colonize said planets.
NXxl6 TIL Dutch historian Rutger Bregman spoke at Davos in 2019 to a roomful of rich people about the need for them to pay their fair share of taxes