A big welcome this month to the Kyoto Protocol - now in force and legally binding. A watered down version of politicians' original efforts to cut greenhouse gas emissions, it remains the only way signatories can be held accountable for pollution. Perhaps. The greatest contribution to reductions in GHGs has been given to transport and industry. But by far the easiest way for governments and other relevant authorities to enforce emission reductions is to focus on the electricity supply sector in particular.
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