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We are raising a few eyebrows with this awesome question from Sam Lane which is Why do we have eyebrows? Yes, those two bits of hair that sits just above your eyes that are preened, picked, plucked, and manicured. Why do we have them? Subscribe: http://bit.ly/SubscribeToEarthLab In a nutshell, as homo sapiens we had hair all over our face and as evolution progressed we lost that hair, but the hair around our eyebrows just hung on. Don't pluck too much as those eyebrows are not just an evolutionary hangover they also protect your eyes from sweat and dust. Yuk! James May on Evolution: http://bit.ly/2Abc2zM Why we have Fingernails: http://bit.ly/2yJaOtE Best of Earth Science: http://bit.ly/EarthLabOriginals Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos The Doctors Are In The House: http://bit.ly/TheDoctorsAreInTheHouse