Guardian: China has finally put some numbers to its climate plans, a significant move in the multidimensional elaborate game of the Copenhagen climate summit. China, Hu Jintao promised yesterday, will deliver a 45% reduction in carbon intensity by 2020. The announcement was greeted with a muted sigh of disappointment. The target will not bring a reduction in China’s emissions: reducing carbon intensity means only that carbon emissions will grow at a slower pace than the economy – in theory …