Martyn begins by introducing teenagers many of whom were once sweet children, and will one day become loving adults, but who between-times morph into lazy, unlikeable adolescents. He questions whether this is all Nurture, all Nature, or a combination of both, but that science can now show us that Nature definitely plays a significant role. He helps us unpick the brain, in order to start to truly understand teenagers. Martyn Richards is a researcher specializing in the world of children and young people.