Reuters: A hydropower plant on the upper reaches of China’s Yellow River was this week approved by the United Nations to sell carbon credits, making it the biggest hydro project to do so, Xinhua reported on Friday. The Bingling hydropower plant in northwest China’s Gansu province will be allowed to sell the offsets after successfully registering with the UN’s official climate change body, Xinhua news agency said on Friday. The project applied for clean development mechanism (CDM) …