Related by context. Frequent words. (Click for all words.) 60 ethanol 59 corn ethanol 55 biofuels 55 biofuel 53 bio fuels 52 bio ethanol 52 renewable fuels 51 biodiesel 51 alternative fuels 50 cellulosic ethanol 50 bioethanol 50 sugar cane 49 Ethanol 49 Cosan 48 biofuel crops 48 cellulosic biofuels 47 Biofuel 47 sugarcane 46 fossil fuel 46 soy 46 jatropha 45 fossil fuels 45 Jatropha 44 feedstocks 44 cellulosic 44 feedstock 43 cleaner fuels 43 Renewable Fuels Association 43 soya 43 fuels 43 biomass 43 palm oil 42 Biofuels 42 Biodiesel 42 flex fuel 42 corn 42 HFCS 42 bio diesel 41 corn stover 41 Amyris 41 cleaner burning 40 biorefineries 40 stevia 40 diesel 40 cane sugar 40 soybean 40 Renewable Fuel 40 soya beans 40 E# ethanol 40 bagasse 40 woody biomass 40 switchgrass 39 deforestation 39 ethanol blended 39 vegetable oils 39 internal combustion engines 39 Soy 39 coca 39 liquid fuels 39 bioenergy 39 low sulfur diesel 39 soybeans 39 bioplastics 39 diesel fuel 38 peasant farmers 38 Amazon rainforest 38 alternative energies 38 Waxman Markey bill 38 oil palm plantations 38 Amazon basin 38 Petrocaribe 38 CAFTA 38 synthetic fuels 38 genetically modified seeds 38 coal gasification 38 biotech crops 37 cacao 37 tar sands 37 grain sorghum 37 Florida Crystals 37 acai 37 Alternative Fuels 37 cropland 37 nitrogen fertilizer 37 coca leaf 37 ULSD 37 coffee plantations 37 carbon emitters 37 corn syrup 37 combustion engines 37 ethanol blends 37 internal combustion engine 37 agricultural commodities 37 transnational corporations 37 plantations 37 biochar 37 Renewable Fuels 36 fuel additive 36 Evo Morales 36 fuel 36 Abengoa