Edgar Hertwich

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Wind turbines require massive structures that are polluting to produce and can harm ecosystems, but these impacts compare favorably with those of fossil alternatives. www.shutterstock.com

Does ‘green energy’ have hidden health and environmental costs?

Edgar Hertwich, Norwegian University of Science and Technology; Anders Arvesen, Norwegian University of Science and Technology; Sangwon Suh, University of California, Santa Barbara, and Thomas Gibon, Norwegian University of Science and Technology

No energy source is perfect, but solar and wind have a much lower health and environmental footprint than fossil fuels, a study finds. Biopower, though, is a mixed bag.

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