Related by context. Frequent words. (Click for all words.) 70 carbon capture 64 bioenergy 61 sequestration 59 biomass 56 switchgrass 56 biofuels 54 renewable energy 53 carbon dioxide 53 carbon 53 CO2 51 biofuel 51 reforestation 51 climate change 51 conservation 51 carbon credits 51 greenhouse gas 50 biodiversity 50 methane 50 greenhouse emissions 50 cellulosic ethanol 50 greenhouse gases 49 soil erosion 49 tar sands 49 greenhouse gas emissions 49 emission reduction 49 geothermal 49 gasification 48 Biomass 48 GHG emissions 48 carbon dioxide emissions 48 fossil fuel 48 renewable fuels 47 renewables 47 carbon emission 47 Renewable energy 47 carbon emissions 47 deforestation 47 fossil fuels 47 remote sensing 47 bio fuels 47 soils 47 mitigation 46 emissions 46 planting trees 46 photosynthesis 46 alternative fuels 46 carbon offsets 46 environmentally sound 46 global warming 45 renewable 45 smart grid 45 shale gas 45 crop yields 45 environmental impacts 45 nitrogen 45 reduce carbon emissions 44 reduce greenhouse gas 44 organic farming 44 greening 44 wildlife habitat 44 tree planting 44 reducing greenhouse gas 44 ecological 44 Smart Grid 44 renewable energies 44 Renewable 43 environmentally sustainable 43 cropland 43 environmental 43 coal 43 ethanol 43 watersheds 43 Clean Energy 43 shale 43 greenhouse 43 sustainability 43 ecosystems 43 FutureGen 43 wind farms 43 Geothermal 42 environmental stewardship 42 forestry 42 Natural Resource 42 offsets 42 biodiesel 42 feedstocks 42 hydropower 42 ecology 42 nutrient 42 agriculture 42 solar thermal 42 Methane 41 Sustainable 41 Climate Change 41 desalination 41 aquaculture 41 Nature Conservancy 41 CO2 emissions 41 Biofuels 41 environmental sustainability 41 reclamation