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TIL that most blackboards are actually green because boards that were black tended to reflect a lot of light, while green boards reduced glare and were favored by teachers who had to stare at them all day.

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woMA7 TIL that tabloid newspapers take their name from medicines. The first pills were known as "tabloids" of compressed powder for easy administration. Tabloid newspapers got their name because they are condensed stories and are "easier to swallow" than normal newspapers.
BgRbW TIL in 1989, Silicon Beach Software coined "plug-in" to describe add-on extensions for their graphics app SuperPaint. They were later acquired by Aldus, which in turn was acquired by Adobe.
x6APB TIL: North Korea had a covert cargo ship named the Chong Chon Gang, which was a front to conduct illicit activities around the world such as smuggling. It was chased by pirates in 2009, detained by Ukraine and Egypt in 2010, and seized by Panama in 2013. The NK gov paid $700k to release it.
x8GB TIL- There is an FBI article about the speech patterns of psychopaths.
1aMK7 TIL SpongeBob SquarePants creator Stephen Hillenburg wanted SpongeBob to be a character with a "young, boyish" attitude, drawing comedic influence from Jerry Lewis, Stan Laurel & Pee-Wee Herman