Robert Morris Sapolsky (born April 6, 1957) is an American neuroendocrinologist and author. He is currently a professor of biology, and professor of neurology and neurological sciences and, by courtesy, neurosurgery, at Stanford University. In addition, he is a research associate at the National Museums of Kenya.
Professor Robert Sapolsky completes his fourth and final part of a discussion about aggression and violence. He discusses how hormones and evolution have shaped this behavior into the way humans interact today.