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TIL there is a quiet zone located in Virginia and West Virginia, nearly 13,000 square miles in size, where radio transmissions are strongly restricted by law, to the point of having a patrol that goes around and forces you to shut off anything that emits radio waves.

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QJ7dM TIL — World Health Organization (WHO) recognizes "occupational burnout" as a syndrome resulting from chronic work-related stress, but does not classify it as a medical condition.
xVn5b TIL Patti Lyle Collins who worked at Dead Letter Office (Mail Recovery Center) in the 19th century could decipher miswritten addresses and names; and she even deciphered waterlogged letters
4keYX TIL that LaMarcus Thompson, the father of the American roller coaster, invented the first coasters on Coney Island because he thought the world was too sinful and needed more moral entertainment
5j0n TIL that without enzymes it would take about 1 millions years for our body to extract energy from ATP
jNeaX TIL the Calusa Native American tribe ate shellfish and discarded middens of shell waste into Florida waters for generations, forming an entire island, ecosystem, and archaeological site known as Mound Key