Why do humans have beards? And why is it predominantly men that are able to grow them? Scientists knuckled down and attempted to figure out the answer! 

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References & Further Reading
1. https://www.britannica.com/topic/beard
2. https://www.bbc.com/future/article/20160418-the-real-reason-men-grow-beards
3. https://www.improbable.com
4. https://www.sciencedirect.com/science/article/pii/S1090513817302660