You may have seen the TreeHugger interview with Goldman Environmental Prize winner Yu Xiaogang where he talks about hydropower in China and the tradeoff between increasing power supply and the environmental and community concerns of doing so.
For some more info on the issues surrounding developing hydropower on the Nu River, including an overview of the traditional, micro and small-scale hydropower usage on the river, check out this video clip from China's Green Beat. Good stuff, with applicability to any number of different types of big-push style projects in the developing world.China, Hydropower
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