BBC: China's greenhouse gas emissions could start to decline within 10 years, according to a report from the London School of Economics. This would be five years earlier than expected and would offer a boost towards efforts to protect the climate. The shift has been partly caused by a massive commitment to renewables. China is the world's top investor in wind and solar power. It has also been replacing old coal plants with cleaner new stations. 'Under-promise and over-deliver' Many of the changes...