Scientists have shown that bonobos combine their calls into complex sound sequences that resemble combinations of human words ...

This is thought to give monkeys, which are social creatures, a more complex way of communicating with each other. All other primates, and even ancient human ancestors, appear to have this special ...

Some researchers have also linked Australopithecine anatomy to an, as yet unknown, knuckle-walking common ancestor of humans, gorillas and chimpanzees. This hypothesis has since been refuted.