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TIL that phone numbers are seven digits because that was once thought to be about the limit of the brain’s working memory

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xVZoo TIL the Siddi are an ethnic group in India, descended from the Bantu people of Africa and have been living there since the 7th Century.
Z89xD TIL in America, if you find a dinosaur in your backyard, that is now your dinosaur.
VB05D TIL that, according to Jerome, the Hebrew name of God (יהוה) was sometimes mistaken for the Greek letters πιπι (pipi).
5x49 TIL that because of superstition surrounding the events of the movie The Taking of Pelham 123, dispatchers avoid allowing trains to depart Pelham Bay Park at 1:23, AM or PM.
LkK5d TIL Scientists are digging up Adélie penguin guano(poop) to study millennia of Antarctica’s history.