Potent ferment

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Biogas_plant_3 Today, 3,500 biogas plants generate just under one percent of the energy used in Germany and more are under way. These cone-shaped buildings work much like bovine stomachs. They turn organic material into methane. But unlike cows, they burn gas to produce electricity, which can be sold to the grid.

There's more. Growing one hectare of crops optimized for use in biogas production facilities can create enough energy to run a car for over 40,000 miles compared to 12,000 miles on biodiesel.

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