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.
He is the author of several books including A Primate's Memoir, which grew out of the years he spent in Africa; The Trouble With Testosterone and Other Essays on the Biology of the Human Predicament; Why Zebras Don't Get Ulcers: A Guide to Stress, Stress-Related Diseases and Coping; and Behave: The Biology of Humans at Our Best and Worst.