Related by context. Frequent words. (Click for all words.) 55 Greenhouse Gases 54 Carbon Sequestration 54 Carbon Dioxide 52 nitrous oxides 52 Carbon Capture 52 Greenhouse Gas Emissions 51 liquids extraction 51 Coal Fired Power 51 Emission Reduction 51 greenhouse gases GHGs 50 greenhouse gas GHG 50 Sequestration 50 greenhouse gases GHG 50 Greenhouse Gas 50 greenhouse gas 50 sulfur oxide 49 Ethanol Production 49 nitrogen oxides NOx 49 Cellulosic Ethanol 49 carbon dioxide 48 Reduce Emissions 48 greenhouse gases 48 Emissions 48 GHG emission 48 CO -2 48 carbon dioxide CO2 48 greenhouse gasses 48 CO2 sequestration 47 CO2 47 carbon capture 47 Future Fuels 47 GHG 47 greenhouse gas emission reductions 47 Advanced Biofuels 47 Pollution Probe 47 Carbon sequestration 47 GHGs 47 CO2 Emissions 47 carbon dioxide sequestration 47 Storage CCS 47 Carbon Emissions 47 sulfur dioxide SO2 47 pollutant emissions 47 Bioenergy 47 Byproducts 47 Mongstad 46 Emission Control 46 sulfur dioxide nitrogen oxide 46 greenhouses gases 46 emitters 46 carbon sequestration 46 SO2 emissions 46 Methane 45 carbon dioxide methane nitrous 45 particulate matter PM 45 methane 45 reduce greenhouse gas 45 greenhouse gas emitting 45 Tar Sands 45 degassing 45 Feedstocks 45 megatonnes 45 Changing Climate 45 nitrous oxide emissions 45 Nitrogen 45 GHG emissions 44 oilsands 44 deplete oxygen 44 nitrogen oxide emissions 44 Hydrogen Economy 44 sulfur oxides 44 thermochemical 44 SAICM 44 emissions 44 heat trapping carbon dioxide 44 cellulose ethanol 44 renewable feedstocks 44 Biorefinery 44 Carbon dioxide 44 biogenic 44 toxic pollutants 44 carbon dioxide methane 44 nitrogen oxides 44 particulate matter emissions 44 NRCan 44 sulfur hexafluoride 44 sulfur dioxide 44 reducing greenhouse gas 43 hydrogen chloride 43 co2 43 ethylene oxide 43 emit CO2 43 Co2 43 Cellulosic 43 GHG reduction 43 pollutants emitted 43 Integrated Gasification Combined Cycle 43 greenhouse emissions 43 Sulfur dioxide 43 GHG reductions 43 Bioethanol