How green are you prepared to be?  Burning fossil fuel is choking our planet with carbon dioxide, but would you stop using petrol or allow wind farms to be built in your back yard?  A BBC/OU/Vega video.

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Is it finally time for renewable energy to stop being the alternative and start becoming the mainstream, eventually transforming our lives? What is the next big energy source?

Chaired by Colin Blakemore, the panel consists of Tony Marmont, Catherine Mitchell, Chris Morris and panel regular Jacqui McGlade.