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Rio+20 Summit

My hon. Friend is using the terms ““green economy”” and ““renewables”” as though they were the same as decarbonisation. As the hon. Member for Brighton, Pavilion (Caroline Lucas) explained, we have to cut our carbon emissions by 80%, or even 90%, by 2050. Currently, about 2.5% of our energy comes from renewables. Does my hon. Friend accept that other forms of low-carbon energy have a major part to play, because he has not mentioned them so far in his remarks? I of course mean nuclear and carbon capture and storage.