Orangutans, chimpanzees, gorillas: These animals are commonly known when it comes to great-ape species, but there’s a lesser-known fourth. Need a hint? They’re the closest primate relatives to humans, ...

Bonobo populations in the Democratic Republic of Congo’s Salonga National Park remained steady between 2002 and 2018, but there are worrying signals of decline, a recent study has found. For decades, ...