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A revival in huge hydro projects may cut carbon emissions, but proponents’ use of the term ‘renewable’ is misplaced.

Hydroelectric dams are the quintessential expression of human control of nature. As well as power, they create reservoirs of clean water, which to some are both pleasing to the eye and a place for tranquil recreation. They promise control of flooding, provide a steady supply of water for irrigation and, with time, a source of fresh fish. They are an economist’s as well as an engineer’s dream, and, coupled with dynamic images of the cranes, bulldozers and swarms of men in hard hats associated with their construction, they are an instant marketing opportunity for politicians eager to demonstrate their commitment to progress. Read more