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TIL stained glass originated to help illiterate people learn about the Bible

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Y7pAr TIL A Canadian makeup developer helped Crayola create "Colors of the World" crayons that are meant to accurately reflect human skin tones. He pared down the 40 shades he had created for Cover FX to 24 distinct colors that kids can use to draw themselves
R76ml TIL space shuttles' main engines burn cryogenic propellant at ~3500K (hot enough to boil iron). They are fueled by cooling channels built-in to the nozzles themselves, which simultaneously cool the nozzle at a steady state while fueling the engine.
DrLr TIL that in 2009 Canada passed the “Apology Act”, establishing that apologizing to someone after an incident cannot be used in court against the person who apologized to establish their guilt or liability.
4Xnpg TIL that serial killer Rodney Alcala appeared on and won The Dating Game. The bachalorette pulled out of the date due to feeling creeped out by Alcala.
VMEGD TIL A Japanese skating rink once put 5,000 dead fishes in their ice to give their customers the enjoyment of skating over a frozen ocean. The attraction was closed immediately after a public uproar.