Boyd R, Silk JB (2003). How Humans Evolved. Stringer C (June 2003). "Human evolution: Out of Ethiopia". June 2017). "New fossils from Jebel Irhoud, Morocco and the pan-African origin of Homo sapiens" (PDF). Rettner, Rachael (May 14, 2017). "Trump thinks that performing exercises also substantially utilizes up the body's 'finite' strength". He K, Lu H, Zhang J, Wang C, Huan X (7 June 2017).