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Ed Butler reports from the Paris summit on what businesses say they can do to help reduce carbon emissions. He talks to Peter Agnefjall, the boss of Ikea, on overcoming our addiction to consumption, a company making burgers from plants that taste just like meat, and another that makes biofuel from wild elephant grass. We also hear from Achim Steineras, executive director of the United Nations Environment Programme, on the big challenges facing policy makers at the summit. (Photo: Climate change activists in Oostende, Credit: AFP/Getty Images)