Biofuels could be an important energy source, but they compete with food for cropland. An analysis of current crop production suggests that increasing yields of biofuel crops on existing cropland could avoid agricultural expansion and its associated impacts.
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Fargione, J. Boosting biofuel yields. Nature Clim Change 1, 445–446 (2011). https://doi.org/10.1038/nclimate1300
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DOI: https://doi.org/10.1038/nclimate1300
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