stackyFACTSRoughly ten percent of people have a small, thickened bump on the upper edge of their outer ear known as Darwin's tubercle. It serves absolutely zero function today, acting merely as a pathetic leftover marker from when our ancestors had much larger, pointier ears to hear predators.
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About 15% of the global population is entirely missing a specific, useless evolutionary leftover in their forearms.
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Beyond modern romance, what cold, evolutionary biological function does kissing on the lips actually serve?
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