› added 5 years ago

271

TIL that the saying "the bottom line" is referring to the bottom line in a math problem, or just the answer and no details.

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RPl9 TIL Texas has at least 200 ghost-towns
W7MQ4 TIL, the sun in our solar system, Sol, is not a member of any constellation. Constellations are categorized by their shape as perceived from our solar system. Therefore, for Sol to be a member of a constellation we would need to travel to another star system to perceived the new "shape".
pvGp TIL a “moment” is a medieval unit of time equal to 90 seconds.
yQjPV Today I learned that craving and chewing ice is associated with iron deficiency with or without anemia, and scientist don’t know why exactly
5kOP TIL that after the fall of the Roman Empire the technology to make concrete was lost for 1000 years.