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"Washington, April 14 , 2015: Our chins did not come from mechanical forces such as chewing but instead resulted from an evolutionary adaptation involving face size and shape - possibly linked to changes in hormone levels as we became more social, fascinating research indicates. \u201CPrimates or the N.."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.ap7am.com/english-news-10397-human-chin-came-from-evolution-not-chewing.html>