These podcasts introduce our documentary, Critical Mass. Critical Mass is a film about the impact of human population growth and consumption on our planet. We explore the current environmental costs of our way of life, the converging crises that we face and the ways that we can secure our future through positive action. Each podcast will discuss one of the themes of our documentary, touch on current events and give you updates on how we're progressing with the film. You can participate by visiting our website, www.criticalmassfilm.com, following us on Twitter.com/criticalmassdoc and sending us your comments, feedback and requests via the contact page on our website.