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<http://www.vanityfair.com/news/2013/06/humans-of-3-5-million-years-ago-radically-changed-diet-got-really-into-csas>
<http://www.vanityfair.com/news/2013/06/humans-of-3-5-million-years-ago-radically-changed-diet-got-really-into-csas>