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Ten global oil firms have met in Paris ahead of the December climate change conference. But their announcemnet has come as a bit of a surprise. They say they recognised that the current trend of greenhouse gas emissions is not consistent with the target of limiting global temperature rises to 2 degrees Centigrade. Bjorn Otto Sverdrup, heads the Sustainability Unit at the Norwegian company Statoil, one of the ten at the Paris meeting to tell us what's going on. And Ian Duff of Greenpeace gives us the reaction from the environmental movement. (This interview was broadcast on 16th October 2015)