Ever wonder why you have eyebrows? Scientists think they now have the answer


When we look back at the fossilized remains of our human ancestors it's easy to see the resemblance. The prehistoric peoples that roamed the Earth hundreds of millions of years ago were similar in body composition to modern humans, but there are some noticeable differences, especially in the skull and face. Thick, pronounced brow ridges are one of those key differences, and researchers have been working on figuring out what purpose the boney brows served, and why we no longer have them. Now, after testing a number of theories, they think they have the answer.

In a new study published in Nature Ecology & Evolution, scientists explain how they tested a number of different possible functions of the boney structures around the eyes of early hominins and discovered that some long-held theories were false. The ridges don't appear to have been a structural reinforcement for the skull, nor do they aid in the mechanics of jaw movement, specifically biting. So, if they didn't serve much purpose, why do modern humans have fluffy tufts of hair where the thick brow ridges used to be? It's all about emotion.

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Ever wonder why you have eyebrows? Scientists think they now have the answer originally appeared on BGR.com on Wed, 11 Apr 2018 at 10:35:35 EDT. Please see our terms for use of feeds.

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