Related by context. Frequent words. (Click for all words.) 70 cellulosic 70 cellulosic ethanol 64 switchgrass 64 biofuels 63 biofuel 62 corn ethanol 62 renewable fuels 61 cellulosic biofuels 61 bioenergy 61 ethanol 60 feedstocks 59 corn stover 59 biomass 59 biobutanol 57 renewable 56 biobased 56 biodiesel 56 woody biomass 56 Renewable energy 55 bio fuels 55 cellulose 55 feedstock 54 alternative fuels 54 fossil fuels 54 biorefinery 53 Ethanol 53 Biomass 53 biorefineries 52 bioethanol 52 sweet sorghum 51 bio diesel 51 bio ethanol 51 liquid fuels 51 fossil fuel 51 Biofuel 51 Organic farming 51 biomass fuels 51 camelina 51 biofuel crops 51 renewable energy 51 Coskata 51 bioproducts 51 Biofuels 50 coal gasification 50 Biodiesel 50 carbon sequestration 50 jatropha 50 Gasification 49 corn cobs 49 synthetic fuels 48 renewables 48 bioplastics 48 vegetable oils 48 lignin 48 alternative energies 48 butanol 47 Fossil fuels 47 corn stalks 47 Jatropha 47 Algae 46 Gevo 46 corn 46 cleaner burning 46 nonpolluting 46 industrial hemp 45 microalgae 45 wood chips 45 Iogen 45 genetic modification 45 renewable energies 45 genetically modified crops 45 corn crop 45 corn soybeans 45 biopolymers 45 anaerobic digestion 45 bagasse 45 Renewable 45 Cellulose 45 biochar 44 OLEDs 44 commercially viable 44 syngas 44 BioEnergy 44 animal fats 44 environmentally benign 44 prairie grass 44 cleaner fuels 44 sugar beets 44 hydrogen 44 gasifier 43 gasification 43 GreenHunter Energy 43 distillers grains 43 recombinant DNA 43 crop residue 43 wood pellets 43 Embryonic stem cell 43 Bioenergy 43 genetically engineered 43 carbon capture 43 Renewable Fuels