Production of bioethanol has attracted global controversy because it uses important food crops. That could be about to change.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/biofuels-learn-eat-less
[2] http://admin.indiaenvironmentportal.org.in/category/author/helen-knight
[3] http://admin.indiaenvironmentportal.org.in/category/journal/new-scientist
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-crops
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-prices
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ethanol
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biofuel
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-conversion
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-technology