The complexity of language drops away further from Africa and may be used a as tool to trace human migration out of Africa, said a New Zealand researcher.
Source: http://www.cosmosmagazine.com/news/4234/human-language-spread-african-origin
Giulianna Ramirez Grace Park Gretha Cavazzoni Gwen Stefani Halle Berry Hayden Panettiere Haylie Duff
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