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TIL that oysters make pearls when an irritant enters their mouth and they deposit a mineral to coat the irritant and make it more bearable, forming a pearl.

Read more animals.howstuffworks.com

via reddit.com

b9lg9 TIL that a former CBS anchor and Fox weatherman quit his job to become a gay porn star
LbM0 TIL In 2012, a 23-year-old student was left behind in a 5-by-10 holding cell by the DEA and was forced to drink his own urine in order to survive.
b6lB7 TIL Harry Mendell invented the Melodian, the digital sampling synthesizer that Stevie Wonder featured on several albums. Mendell also helped develop Unix, and went on to contribute to the fields of global risk management, stock options trading, and machine learning.
b9bX9 TIL Woody Harrelsons father (Charles Harrelson) was an American hitman and organized crime figure.
XJEX TIL that NBC censored a tribute to the victims of the 7/7 bombings from the 2012 Olympic opening ceremony coverage because ‘it wasn’t about America’