I am surprised that no one else has mentioned the issue that became increasingly frustrating the longer I watched. I heard at least 20, maybe 30 male experts in the first 15 minutes, with not a single female voice. I switched off at this point. While I applaud every effort at promoting sustainability, film makers cannot ignore half the population of the planet and expect us to clap. There are many female evolutionary biologists, ethicists, anthropologists etc who could have added so much, instead the film makers alienated so many. Very disappointing.