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TIL most Japanese schools don’t have janitors. Instead children do the cleaning daily as part of a practice rooted in Buddhist traditions that associate cleaning with morality.

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7DJX TIL that certain metals (including copper, brass, silver, and gold) are naturally antimicrobial. A brass doorknob will self-sterilize in about eight hours if left untouched.
v1jbL TIL that a man --Dharampal Singh, was stoned to death by monkeys in India. The animals had collected bricks from a dilapidated building nearby and reportedly pelted him with the bricks from a tree. His family lodged a formal complaint about the incident at Doghat police station in Uttar Pradesh.
6DVW TIL fist bumps have been scientifically proven to be a safer and more hygienic greeting than handshakes and high-fives
e0QeJ TIL they tried to approve the sale of the Chicago Stock Exchange on December 2016 to a Chinese Consortium out of Chicago.
p8QEQ TIL MHV and FIPV, both belonging to the family of Coronaviruses, have been reverse engineerable since 2003. The key feature of the method is an interspecies chimeric MHV that serves as the recipient.