UM-Bot Posted January 31, 2016 #1 Share Posted January 31, 2016 (IP: Staff) · It might not be immediately evident, but humans are actually the only animals on Earth with a chin. The humble chin is such an obvious part of our facial anatomy that most of us simply take it for granted and don't think much about it, yet for years scientists have been attempting to answer a single, fundamental question about this peculiar strut of bone - why do we have it ? Read More: http://www.unexplain...ies-with-a-chin Link to comment Share on other sites More sharing options...
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