The Growing Political and Social Fight

Climate change is not just about science. It's also about politics and power. And 2015 is the year that the fight to take on climate change is really heating up, with movements around the world battling the power of the fossil fuel industry. To help put this growing battle and political fight in context, we speak to Bill McKibben founder of 350.org, and Tim Flannery, scientist and author of The Weather Makers.