ROBERT SAPOLSKY is a professor of biological sciences at Stanford University and of neurology at Stanford's School of Medicine. He is also a research associate at the National Museums of Kenya. While his primary research, on stress and neurological disease, is in the laboratory, for twenty-three years he has made annual trips to the Serengeti of East Africa to study a population of wild baboons and the relationship between personality and patterns of stress-related disease in these animals.
His latest book, A Primate's Memoir, grew out of the years spent in Africa. He is also the author of Stress, the Aging Brain, and the Mechanisms of Neuron Death, and two books for nonscientists, The Trouble With Testosterone and Other Essays on the Biology of the Human Predicament and Why Zebras Don't Get Ulcers: A Guide to Stress, Stress-Related Diseases and Coping.