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TIL the human brain doesn’t perceive total blackness when there is no light present; it instead perceives Eigengrau, a shade of dark gray, because contrast is more important to the visual system than absolute brightness

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jAGN TIL New Hamphire prison inmates that have to make license plates, stamp their state motto “Live Free or Die” …hour after hour, day after day,
YpRMW TIL that in 1998, a 13-year-old Scarlett Johansson lost the lead role in The Parent Trap to Lindsay Lohan.
oBPwY TIL There is a mental delusion called "The Truman Show delusion" where patients believed their lives were reality television shows. One traveled to NewYork to check whether the World Trade Center had actually fallen—believing 9/11 attacks to be an elaborate plot twist in his personal story line.
94xB TIL the word ‘Homeboy’ goes back to the 1800’s, and was used by African Americans to refer to each other as people from 'back home’.
aw86b TIL that the ancient Romans built an artificial waterfall which to this day is the tallest man-made waterfall in the world.