Hopes Dim for Renewable Power From Ocean Waves and Tides

Photographer: Jason Childs/Getty Images

Harnessing the power of the oceans sounds like a great way to make electricity. There’s no Nimby problem because the generating equipment is out at sea. Waves and tides aren’t as subject to the vagaries of weather as solar and wind energy are. With oceans covering two-thirds of earth’s surface, it can seem the ultimate source of clean, renewable energy.

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