› added 10 years ago

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TIL that the stop sign has a unique eight-sided shape so that drivers facing the back of the sign know that oncoming drivers have a stop sign.

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XEaL6 TIL that the sound from snapping your fingers comes from the middle finger hitting your palm, not from the thumb
pYaoQ Today I learned that "ground beef" meant beef that has been ground via some sort of grinding process, not beef that came from the land.
kJGL7 TIL the CIA struggled to recruit candidates who had visible tattoos because such markings made agents easier to identify. This rule has been relaxed, but it once limited their ability to hire otherwise qualified applicants.
dLj9 TIL ancient Romans used ammonia from urine to wash togas in a manner simillar to modern day dry cleaning, and the collection of urine was taxed.
wL006 TIL that NASA spaces flights have had wake up songs for the astronauts starting with the gemini program, the day 2 song for the SpaceX flight is “planetary caravan” by Black Sabbath.