Aping Evolution - Episode 2

Professor of Genetics Steve Jones challenges the controversial science of evolutionary psychology. Evolutionary psychologists say human behaviour, such as who we marry, when we have children and even the quality of our sex lives, can be explained by having a Stone Age brain in a 21st century body. Professor Jones examines the scientific evidence for such claims and asks if we should be worried if contentious theories escape the world of science and enter the arena of social policy.