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TIL part of Washington, DC was returned to Virginia in 1846 in a process called "retrocession," but the sections donated by Maryland have resisted the idea of being reunited with Maryland.

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D11ov TIL there is a theory that homosexuality might be caused by the mother's immune system---which may mistake male-specific proteins on the Y chromosome as pathogens and "attack" them, leading to developmental quirks
VMlMk TIL 64% of Americans believe schizophrenia involves a split personality. A person with schizophrenia doesn't have two different personalities. Instead, he has false ideas/delusions or has lost touch with reality. Multiple personality disorder is unrelated.
gMw1W TIL a bear in a state park got into campers’ coolers and used claws & teeth to puncture beer cans; Fish & Wildlife Sgt. Bill Heinck said the bear tried a can of Busch, ignored the rest, then drank about 36 Rainier beers. They caught it a live trap baited with donuts, honey, open cans of Rainier.
x64x7 TIL of Panilo (Hawaiian cowboys). After cows were introduced to Hawaii in 1793 their population grew to the point of being a dangerous nuisance. King Kamehameha III, impressed with Mexican Vaqueros seen during a state visit, invited some over to teach the Hawaiian people to manage cattle and ranches
b6rGQ TIL in 1818, an Englishman accused of murder demanded a trial by combat. Surprisingly, the law that allowed for trial by combat was still valid, and the man was acquitted when his accuser declined the offer of battle. Trial by combat was abolished the following year.