摘要：In this article, the authors consider the problems of using large dams, and analyze environmental and economic indicators. Reducing climate pollution and eradicating poverty are two of the most serious challenges facing the world today. More than 50,000 large dams block at least 60% of the world's rivers. The consequences of this massive engineering program are devastating. Large dams destroy species; flood vast areas of wetlands, forests, and agricultural land; moving tens of millions of people, and influencing half a billion people living downstream.
