People bring both risk and reward to chimps

Getting used to people hanging around has been a mixed blessing for chimps in Africa’s Côte d’Ivoire.

Groups of chimpanzees in the Tai National Park have become habituated to people, allowing both researchers and ecotourists close access for decades. Respiratory diseases broke out among these chimps five times between 1999 and 2004, killing at least 15 animals.