› added 9 years ago

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Today I learned that ‘sine’ is derived from an Arabic word for 'bosom’, thus making it the oldest mathematical boobies joke.

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d8VGK TIL there is a 'Richter scale for human calamity' called the Foster scale. According to the Foster scale, WWII was the most disastrous event in human history with a score of 11.1, the Black Death ranks number 2 at 10.9, and WWI at number 3 with 10.5.
K8vR TIL on this day in 1981, Ronald Reagan fired 11,345 air traffic controllers
R7dE6 TIL C3P0 and R2D2 guest-starred on a 1980 episode of Sesame Street. Along with singing and playing games, it also featured R2 falling in love with a fire hydrant.
KAmR TIL that for years, the slogan on Oklahoma license plates was “Oklahoma is OK.”
vxDK TIL A report found that, for every $1 invested in the US National Park Service, the American public receives $4 in economic value.