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TIL bacteria from chronic gum disease has been found in brains suffering from Alzheimer's. Bad oral hygiene has been a known risk factor for dementia but researchers now suspect that bacteria from gum disease may somehow cross into the brain and cause or worsen Alzheimer's symptoms.

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WWld TIL Matt White, former promising minor league baseball pitcher, bought 50 acres of land from his aunt for $50k so she could go into a nursing home. The land ended up being solid Goshen stone, and estimated to be worth about $2.5 billion
LD5p TIL a radio station played N.W.A.’s song Express Yourself for 24 hours as a protest against censorship after being forced to stop playing Fuck tha Police
69p7 TIL that a Uranium deposit in Africa naturally developed criticality and produced fission power for hundreds of thousands of years. It was a “natural nuclear reactor”.
9Y9aX TIL Japanese Gen. Kuribayashi knew he was facing unsurmountable odds during the invasion of Iwo Jima. He forbade standard Japanese banzai charges, leading an American general to say he was "one smart bastard." At the end, he inflicted 26k American casualties while fighting with "emaciated men."
epDkJ TIL that Hermione was based on J.K. Rowling: the author loosely based the character on herself when she was 11 years old, and chose an otter as Hermione's patronus as it's her favourite animal. She also took the name from Shakespeare's The Winter’s Tale and didn't want a popular name