【英语时差8,16】不怕火的猩猩-下（在线收听）

 They believe that their first step to controlling fire was the ability to understand and predict its behavior. Later on, hominids learned to contain the fire by adding fuel or extinguishing it. In a final step, they learned how to create fire. Researchers believed that understanding fire was a distinctly human trait that evolved long after the chimpanzee and hominid lines split on the family tree. These findings suggest that understanding fire is not so uniquely human after all. Of course, scientists don’t expect to see chimps roasting burgers at a tailgate party anytime soon. But this information does give us an understanding of our closest cousins and ourselves.