The ability to imagine -- to play pretend -- has long been thought to be unique to humans. A new study suggests certain apes may be able to as well.

National Geographic Explorer Brent Stirton has photographed life inside Virunga National Park over the course of nearly two decades—chronicling stories of violence and resilience. Conservation rangers ...

Given that bonobos are endangered in their home of the Democratic Republic of Congo, he added, “My hope is that that kind of ...