146 dams threaten Amazon basin

Mongabay: Although developers and government often tout dams as environmentally-friendly energy sources, this is not always the case. Dams impact river flows, changing ecosystems indefinitely; they may flood large areas forcing people and wildlife to move; and in the tropics they can also become massive source of greenhouse gases due to emissions of methane. Despite these concerns, the Amazon basin--the world's largest tropical rainforest--is being seen as prime development for hydropower projects. ......

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