There is no Planet B - Mike Berners-Lee gives a live talk on consumption and carbon footprints. 

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Mike Berners-Lee is an English researcher and writer on carbon footprinting. He is a professor and fellow of the Institute for Social Futures at Lancaster University and director and principal consultant of Small World Consulting, based in the Lancaster Environment Centre at the university. His books include How Bad are Bananas, The Burning Question and There Is No Planet B. He is considered an expert on carbon footprints.