(HealthDay News) -- While chimpanzees will help each other upon request, they're not likely to offer help voluntarily, say researchers trying to understand the evolution of altruism.
A Japanese research team studied six pairs of chimpanzees (three mother-offspring pairs and three non-related adult pairs) in experiments designed to find out whether a chimpanzee would give a tool to a partner even if doing so wouldn't bring an immediate benefit. Read more...
