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TIL of ‘Tetris Effect’, where a person devoting a large amount of time to a particular pattern-based activity(which in this case is Tetris) will start unconsciously thinking and dreaming about it

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rgDy TIL China produces 67% of the world’s watermelons. They produce 20 times more than the second highest producer.
KOY9E Scientists Talk About the Possibility of a Zombie Virus
9wWOr TIL that Pilot FriXion ink is thermo-sensitive, and leave a notebook or homework near heaters or in a car on a hot day can make the ink invisible. To make the text reappear, you can simply put it in a freezer for a short period of time, the ink should reappear at around -10C/14F
wL1JM TIL infamous cult leader Jim Jones was one of the first people in Indiana to have a desegregated congregation which also aided in desegregating local businesses and restaurants through peaceful protests. Throughout his early life he was very passionate about civil rights.
ekBD TIL a 1995 WHO study that stated “Occasional cocaine use does not typically lead to severe or even minor physical or social problems” was never published because the US threatened to withdraw US funding for all WHO research projects