Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
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A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
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Mentally doing a task makes you better at it. Your mind can barely tell the difference.
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The chills you sometimes feel when listening to music is called "musical frisson."
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Dogs can make about 100 different facial expressions.
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The Platypus used to be considered a myth like Bigfoot and the Yeti.
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