Sound familiar? Like human moms, chimpanzees pour immense resources into raising their offspring into healthy adults, which can live up to 40 years in the wild. Though chimp communities—which ...

I stood listening until I heard a faint rustling of leaves—the only sound to betray the presence of the group of chimpanzees I was trying to approach. Slowly and quietly, but making no attempt ...

The latest news and headlines from Yahoo News. Get breaking news stories and in-depth coverage with videos and photos.