The Congo basin is an unruly ribbon of tropical forest, over a million square miles spanning six countries in Central Africa. It is the second-largest contiguous tropical forest in the world. The basin is home to the classics of African wildlife – chimpanzees, elephants, gorillas – along with thousands of other less well-known species.
This wealth of flora and fauna, much of it native to the region, is enough to qualify the Congo basin as a biodiversity hotspot: a biologically rich...