Radio New Zealand: China has for the first time given a timeframe for reducing its carbon emissions. The world’s largest emitter of greenhouse gases says it will begin dropping emissions in 2050. The comments by top policy-maker Su Wei have been carried in the Financial Times newspaper, but they did not indicate at what level emissions would top out. At a G8 meeting in July, China and India resisted calls to agree to a 50% cut in global emissions by 2050. Mr Su has restated …