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How Solar Panels Work

Solar photovoltaic (PV) panels are based on a high-tech but remarkably simple technology that converts sunlight directly to electricity.
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A reactor under construction.

Nuclear Power Cost

Nuclear power in the United States has consistently cost far more than expected, with taxpayers and ratepayers forced to pick up the tab.
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How Biopower Works

Biomass (plant material and animal waste) is the oldest source of renewable energy, used since our ancestors learned the secret of fire.
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An aerial view of a forest with a large square cleared out.

Soybeans

A hugely valuable crop with many uses, from animal feed to biofuels, soybeans also have an unfortunate by-product: tropical deforestation.