Studies show that West Africa's critically endangered chimpanzees are finding ways of adapting to their rapidly changing habitat, but they still remain highly at risk.
Our closest relatives show distinct cultural behaviour in different populations. But those differences are being erased.
Early hominins are thought to have made a new shelter every night, which taught them how to adapt to changing conditions.
Do chimpanzee talk to each other? Scientists follow and record chimpanzees in the wild to find out – and to fill in details about how human language might have evolved.
Wild chimpanzees are hard to find, but their DNA – left-behind genetic traces – are opening up a new way of studying them.
New, fascinating observations about the behaviour of wild chimpanzees showed that they can apply a complex technique to access honey.