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TIL Hedgehogs can suffer from balloon syndrome, a rare condition where an infection to the skin causes it to inflate

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Wa98 TIL that British citizens are not considered foreigners under Irish law; neither are Irish citizens under British law. Both groups can freely enter, vote, work, and retire in either country.
rRblw TIL While he was sick former Japanese fighter pilot Tetsuzo Iwamoto's last words were "When I get well, I want to fly again".
kJkem TIL mature cystic ovarian teratoma (ovarian tumor) can differentiate into tissue such as hair, teeth, fat and more
6Z1Y TIL that the word ‘daily’ in the line 'Give us this day our daily bread’ of the Lord’s prayer comes from the Greek 'epiousios’, and is probably a mistranslation. Nobody knows the real meaning.
D17eJ TIL the granite used to build the US Capitol is so radioactive that the building would fail federal safety codes regulating nuclear power plants.