Louis J. Sheehan, Esquire. Oceanographic surveys suggest that China's Three Gorges Dam is
already influencing biological productivity in the East China Sea, even
though the structure is still under construction. The dam, on the
Yangtze River, will be the world's largest when it begins full-scale
operations later this decade (SN: 5/24/03, p. 323: Available to
subscribers at http://www.sciencenews.org/articles/20030524/fob1.asp).
The first phase of filling the dam's reservoir was
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