Robert M. Yerkes was assistant professor of comparative psychology at Harvard University, managing editor of the Journal of Animal Behavior, and editor of the Animal Behavior Series.
Reef-building sponges are giving up their long-held secrets.
The flexible neck of the Amazon River dolphin let it hunt masterfully in the muddy shallows of the Amazon Basin.
Forensic anthropologists do facial reconstruction from remains of two crewmen found on the USS Monitor
The evolution of disgust