What is the potential for developing more hydroelectric power in North America versus developing countries, and what would be the environmental impacts of such development?
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Few sites remain that are suitable for hydroelectric facilities in North America or elsewhere. "Only 2% of the nation's rivers remain free flowing, and many of these are now protected by the Wild and Scenic Rivers Act of 1968, a law that effectively gives certain scenic rivers the status of national parks. Proposals for new dams outside of the United States are embroiled in controversy over whether the projected benefits justify the ecological and social trade-offs."
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