Our species, Homo sapiens — with our complex thoughts and deep emotions — were the only true humans to ever walk the Earth. A study last week found early humans were building structures with wood before H. sapiens evolved. This ability to read ancient DNA revolutionized the field, and it is constantly improving. He specializes in creating lifelike models of ancient humans for museums, including the Smithsonian and the American Museum of Natural History, in hopes of helping public perception catch up to the science. They haven't been able to gather much ancient DNA from Africa, where H. sapiens first evolved, because it has been degraded by heat and moisture.

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Persons: ”, Chris Stringer, ” Stringer, sapiens, Rick Potts, naledi, heidelbergensis, John Shea, “, Svante Paabo, Paabo, Bence Viola, Potts, Shea, ’ ” Shea, let’s, Janet Young, Young, John Gurche, Gurche, ” Gurche, “ They’re, they’re, it’s, haven't, we’ll, Mary Prendergast Organizations: Stony Brook University, University of Toronto, Canadian Museum, Smithsonian, American Museum of, Rice University, Associated Press Health, Science Department, Howard Hughes Medical Institute’s Science, Educational Media Group, AP Locations: Africa, Europe, Indonesia, Asia, Swedish, East, Southeast Asia