Bioelectricity Promises More 'Miles Per Acre' Than Ethanol

Biofuels such as ethanol offer an alternative to petroleum for powering our cars, but growing energy crops to produce them can compete with food crops for farmland, and clearing forests to expand farmland will aggravate the climate change problem. How can we maximize our "miles per acre" from biomass? Researchers writing in Science say the best bet is to convert the biomass to electricity, rather than ethanol.

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