Australian Graham Barker has been collecting his own belly button fluff every day since 1984 - keeping it in storage jars.
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There's a knife-fork hybrid called a knork.
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There is a family with a genetic condition that makes their skin blue, who have been isolated in rural Kentucky for generations.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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During the Black Plague, it was thought that bad smells were the cause of the plague. "Plague Doctors" therefore wore masks with long beak-like noses stuffed with flowers or smoke to hide the smells.
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Obsessive nose picking is called Rhinotillexomania.
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