Part 1 of the TED Radio Hour episode Hardwired.
About Robert Sapolsky's TED Talk
Neuroscientist Robert Sapolsky says nearly all aspects of human behavior are explained by biology: from developments millions of years in the past to microscopic reactions happening in the present.
About Robert Sapolsky
Robert Sapolsky is a primatologist and a professor of neuroscience at Stanford University. His current research examines how stress alters personality patterns and social behavior.
Sapolsky's latest book, Behave: The Biology of Humans At Our Best And Worst, tries to answer the question, why do we do the things we do?