Watch the full film Attenborough’s Life Stories:Understanding the Natural World (available through February 6):

The second of the 3-part series celebrating the life and work of Sir David Attenborough. In this episode, Attenborough shares his memories of the scientists and the breakthroughs that helped shape his own career in translating these discoveries into film. Buy the film. Attenborough’s Life Stories: Understanding the Natural World premiered January 30, 2013. (Video limited to US & Territories).