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(Click for frequent words.) 71 cleaner burning 70 alternative fuels 62 renewable fuels 62 fossil fuels 62 sulfur fuels 60 biofuels 59 bio fuels 58 biofuel 57 alternative energies 57 fossil fuel 57 cleaner greener 57 renewable energy 57 diesel engines 56 biodiesel fuels 56 biodiesel 56 diesel 56 bio diesel 55 biodiesels 55 low sulfur diesel 55 renewable energies 55 renewables 55 Ultra Low Sulfur Diesel 55 polluting fossil fuels 54 biofuel blends 54 autogas 54 biomass fuels 54 carbon capture 53 nonfossil fuel 53 diesels 53 carbon emitting 53 liquefied coal 53 renewable 52 emission reduction 52 reduce carbon emissions 52 ethanol blended 52 liquid fuels 52 greener 52 ethanol 51 CO2 emission reduction 51 stringent emission 51 environmentally friendlier 51 Renewable Transport 51 fuels 51 GHG emitting 51 internal combustion engines 51 emissions 51 NGVs 50 O2Diesel ™ 50 bio diesels 50 cleanest burning 50 diesel powered 50 environmentally friendly 50 coal 50 hydrogen powered 50 biomass 50 GHG abatement 50 biodiesel blends 50 flex fuel 50 emission 50 hydrogen fuel 50 cleaner 50 nonpolluting 50 zero emission 50 diesel powertrains 50 finite fossil fuels 50 gasohol 50 carbon emission 49 Propane autogas 49 inefficient incandescent bulbs 49 decarbonising 49 coco biodiesel 49 propane autogas 49 reducing carbon emissions 49 synthetic fuels 49 dirtiest fossil 49 cellulosic fuels 49 particulate filters 49 ethanol bio diesel 49 carbon dioxide emissions 49 compressed natural 49 cellulosic biofuels 49 corn ethanol 49 cellulosic ethanol 49 feedstocks 49 cleanest fossil 48 internal combustion engine 48 IGCC plants 48 gasifying coal 48 sulfur diesel 48 nonfossil fuels 48 liquified natural gas 48 cellulose ethanol 48 carbon emissions 48 reduce NOx emissions 48 CO2 emitting 48 decarbonise 48 greenhouse gas emission 48 Clean Fuels 48 diesel particulate filters 48 algae biofuel 48 bio diesel fuels 47 tailpipe emissions 47 ethanol blends 47 greenhouse gas emitting 47 greenhouse gases 47 dimethyl ether 47 curbing greenhouse gases 47 decarbonisation 47 greenhouse gas 47 coal liquefaction 47 ULSD 47 sulfur diesel fuel 47 HFC refrigerants 47 nitrogen oxide NOx emissions 47 drayage trucks 47 liquefying coal 47 particulate matter emitted 47 BtL 47 Tailpipe emissions 47 curbing carbon emissions 47 GHG emission 47 renewably generated 47 propane AutoGas 47 NOx 47 coal fired 47 greenhouse gas emissions 47 dirtier fuels 47 vehicles NGVs 47 pollutant emissions 47 emission reductions 47 feebates 47 flexfuel vehicles 47 leaded petrol 46 de carbonizing 46 decarbonised 46 hydrogen 46 B5 biodiesel 46 PHEVs 46 greenhouse gasses 46 hybrid drivetrains 46 Transport Fuels Obligation 46 nitrogen oxide emissions 46 Coal gasification 46 greenhouse emissions 46 reduce greenhouse gasses 46 petrodiesel 46 E# flex 46 renewably 46 decarbonize 46 carbon dioxide emission 46 biogasoline 46 greenhouse emission 46 double hulled tankers 46 hybrid electric 46 Fischer Tropsch fuels 46 carbondioxide emissions 46 LPG CNG 46 noncarbon 46 Low sulfur diesel 46 E# ethanol 46 diesel engine 46 smokestack scrubbers 46 Ethanol blended 46 CAFÉ standards 46 bioheat 46 microgeneration technologies 46 gas guzzling cars 46 fuel 46 GHG emission reduction 46 carbon dioxide CO2 emission 45 gasified coal 45 Compressed Natural Gas 45 renewable feedstocks 45 decarbonizing 45 cookstoves 45 propane Autogas 45 oxidation catalysts 45 exhaust emissions 45 B# biodiesel [002] 45 particle filters 45 hydrogen fueling 45 Hythane 45 nitrogen oxide NOx 45 Autogas 45 coal gasification 45 exhaust emission 45 reduce greenhouse gas 45 Flexible Fuel 45 soy biodiesel 45 cellulosic 45 ultralow sulfur diesel 45 woody biomass 45 algal oils 45 biobutanol 45 Clean Cities 45 hydro carbons 45 nonrenewable fuels 45 petrochemical feedstock 45 nonrenewable fossil fuels 45 FFVs 45 conventional internal combustion 45 octane enhancer 45 particulate traps 45 particulate emission 45 ethanols 45 polluting 45 Compressed natural 45 programmatic CDM 45 nitrogen oxide 45 analyst Jens Riese 45 E# pumps 45 fuel efficent 45 urea injection 45 Hythane R 45 Renewable Fuels Standard 45 nitrogen oxides NOx emissions 45 environmentally sustainable 45 greehouse gas 45 MaxxForce engines 45 NOx emissions 45 greener cleaner 45 cleanest internal combustion 45 carbon 45 GHGs 45 nonfood crops 45 calorically dense foods 45 fossile fuels 45 GHG greenhouse gas 45 emission norms 45 gas guzzling vehicles 44 NOX emissions 44 smart grids 44 Low Carbon Fuel 44 Fischer Tropsch process 44 Hydrogen Economy 44 Sugarcane ethanol 44 ZEVs 44 liquefied natural gas 44 LNG 44 combustion engines 44 gas guzzling autos 44 environmentally beneficial 44 Hydrogen 44 smog forming pollutants 44 cellulosic biofuel 44 SOx emissions 44 carbon emmissions 44 hybrid powertrains 44 carbon dioxides 44 heat trapping pollutants 44 biojet fuel 44 offshore windpower 44 unleaded fuel 44 Flex Fuel 44 Cellulosic ethanol 44 NExBTL 44 reformulated gasoline 44 antipollution 44 cleanest diesel 44 additive MTBE 44 NExBTL Renewable Diesel 44 biomethane 44 ultralow sulfur 44 carbon dioxide emission reductions 44 Escape Hybrid E# 44 IGCC 44 biomass boilers 44 Sulphur Emission Control 44 diesel fuel 44 diesel particulate filters DPFs 44 particulate emissions 44 liquified gas 44 hydrotreating units 44 gaseous fuels 44 biodiesel feedstocks 44 air pollution 43 WestStart CALSTART 43 gas guzzlers 43 BlueTec 43 cleaner quieter 43 Deron Lovaas 43 emmissions 43 cap andtrade 43 blender pumps 43 petrochemical feedstocks 43 efficient cookstoves 43 hydrocrackers 43 nitrogen oxides NOx 43 CO2 sequestration 43 algal biofuel 43 biofuels cellulosic ethanol 43 GHG emission reductions 43 converting cellulosic biomass 43 GHG reduction 43 DPFs 43 Bio DME 43 sulfur 43 sugarcane ethanol 43 Integrated Gasification Combined Cycle 43 CNG 43 Westport HPDI 43 carbon dioxide CO2 emissions 43 nonfossil 43 biofuel feedstocks 43 Carbon dioxide emissions 43 greenhouse gas emission reductions 43 jatropha biodiesel 43 Homogeneous Charge Compression Ignition 43 Rams Chevrolet Silverados 43 nonrenewable sources 43 selective catalytic reduction 43 XenTx TM 43 narcissism Twenge 43 natural gas 43 E# gasohol 43 sulfur dioxide SOx 43 LSFO 43 Renewable fuels 43 Selective Catalytic Reduction SCR 43 GHG emitters 43 pollutants emitted 43 CO2 emissions 43 CAFE standards 43 bio ethanol 43 algae biofuels 43 GHG emissions 43 emmission 43 desalinating water 43 Shell Hydrogen 43 Vehicles FFVs 43 reducing greenhouse gas 43 nitrogen oxides sulfur oxides 43 O2Diesel 43 stricter emission 43 Flexible Fuel Vehicles 43 enery 43 Alternative Fuels 43 CO2 emission 43 HCNG 43 tailpipe exhaust 43 dimethyl ether DME 43 combustors 43 emit greenhouse gases 43 SECAs 43 retool factories 43 heat trapping gasses 43 economywide cap 43 feedstock 43 Duramax #.#L 43 baseload renewable 43 MTBE additive 43 PEVs 43 O2Diesel TM 43 smog forming 43 Fuel Obligation 43 biofuel crops 43 hybrids 43 Bharat Stage 43 cellulostic ethanol 43 emission offsets 43 Renewable Portfolio Standards 43 toxic dispersant 43 nitrogen oxide NOX 43 carbon emission reductions 43 pollution 43 Biomass gasification 43 Bio fuels 43 GDiesel ® 43 Biofuel 43 environmentally damaging 43 desulphurisation 43 environmentally benign 43 Bioheat 43 vehicles FFVs 43 commercialize cellulosic ethanol 43 renewably sourced materials 42 EVs 42 de carbonization 42 soot pollution 42 hybrids diesels 42 Gas Recirculation EGR 42 smog forming emissions 42 Flexifuel 42 ICEs 42 coco diesel 42 petrol guzzlers 42 diesel engined cars 42 B# biodiesel [001] 42 Renewable Diesel 42 cellulosic feedstocks 42 diesel particulates 42 inefficient boilers 42 Natural Gas Vehicles 42 oxy combustion 42 sulfur dioxide pollutant 42 Selective Catalytic Reduction 42 environmentally friendly refrigerants 42 greener lifestyles 42 biomass feedstock 42 environmentally sound 42 tailpipe pollution 42 Jim Crouse Capstone 42 sequester greenhouse gases 42 burning gaseous fuels 42 CFBs 42 hydrotreaters 42 cetane rating 42 repowering 42 unmodified diesel 42 greenhouse gases GHG 42 carbon sequestration 42 flexfuel 42 Cellulose ethanol 42 nonroad diesel 42 emit carbon dioxide 42 pyrolysis oils 42 woodburning stoves 42 wood pellet heating 42 biosequestration 42 sulfur crudes 42 Cellulosic biofuels 42 nonroad 42 GHG permitting 42 #LL [001] 42 reducing CO2 emissions 42 NExBTL renewable diesel 42 electric drivetrains 42 LNG liquefied natural 42 Quaiattini 42 MACT standards 42 de carbonize 42 nitrogen oxides 42 E# biofuel 42 PRB coal 42 sulfur oxide 42 ecomagination GE 42 de carbonise 42 biodiesel B5 42 emit CO2 42 Phyllis Cuttino director 42 Ultra Low Sulphur 42 Renewables Obligation 42 octane leaded 42 hydrocracking 42 Internal combustion engines 42 bioenergy 42 synfuels 42 installing scrubbers 42 CNG Compressed Natural Gas 42 biocrude 42 B5 blend 42 biofueled 42 efficient powertrains 42 modal shift 42 repower 42 Renewable 42 incandescent bulbs 42 integrated gasification 42 hydrocarbon fuels 42 alternatively fueled 42 GTL kerosene 42 petroleum refiners 42 elemen 42 SOx 42 Emissions 42 vehicle tailpipes 42 algal fuels 42 avgas 41 heaviest polluters 41 agro fuels 41 diesel particulate filter 41 PZEVs 41 Soladiesel 41 Renewable Fuel 41 RenDiesel fuel 41 Soy candles 41 Andrew J. Littlefair 41 SCR selective catalytic 41 oxyfuel combustion 41 Remy HVH electric 41 decarbonization 41 refiners 41 greenhouse gas GHG emission 41 baseload electricity 41 cellulosic materials 41 BlueTec diesel technology 41 tailpipe CO2 emissions 41 electric hybrids 41 emitting greenhouse gases 41 Biobutanol 41 desalinization plants 41 C# emissions 41 Low Emission 41 Biofuels 41 switchable batteries 41 hybrids electrics 41 Vehicle Miles Traveled 41 incandescent lightbulbs 41 Amyris renewable 41 pollutant emission 41 tailpipe emission standards 41 Biodiesel 41 desalinate water 41 retrofitting 41 rank coals 41 nonpetroleum 41 RON# [001] 41 EcoBoost engines 41 Carbon Dioxide CO2 emissions 41 E# blends 41 liquefication 41 subbituminous coal 41 asphalt lube oils 41 Alliance AutoGas 41 energy 41 efficient lightbulbs 41 global warming gases 41 bio butanol 41 sulfer 41 co2 emissions 41 LPG 41 lithium titanate batteries 41 mercury sulfur dioxide 41 CNG compressed natural 41 Technological breakthroughs 41 vehicles EVs 41 tailpipe emission 41 Iogen Energy 41 Bluetec 41 CO ₂ 41 hydrous ethanol 41 EPA# 41 Rentech synthetic 41 gasoline 41 gas guzzling SUVs 41 harmful gases 41 smog forming nitrogen oxides 41 heavy crudes 41 Cummins Westport 41 oilsands extraction 41 unconventionals 41 Clean Energy 41 low NOx burners 41 particulate filter 41 renewables hydro 41 CNG LPG 41 Renewable Fuels 41 Andrew Littlefair Clean 41 GHG 41 butanol 41 smog forming pollution 41 OWBs 41 B# biodiesel blend 41 thermochemical processing 41 air pollutants emitted 41 nitrous oxides 41 combating global warming 41 Fischer Tropsch 41 coal liquification 41 geosequestration 41 diesel oxidation catalysts 41 decontrol petrol 41 de carbonisation 41 refineries 41 Liquefied Natural Gas 41 conventional combustion engines 41 CO -2 emissions 41 environmentaly friendly 41 biofuel feedstock 41 biorenewable resources 41 Therese Langer 41 conventionally powered 41 biodeisel 41 deisel 40 bioethanol E# 40 Cummins Emission Solutions 40 hydrogen combustion engine 40 tailpipe pollutants 40 Diesel Emissions Reduction 40 heat trapping carbon emissions 40 negawatts 40 polluting additive MTBE 40 HCCI engines 40 carbon emitters 40 agrofuels 40 liquefied hydrogen 40 compression ignition engines 40 diesel particulate filters DPF 40 depleting fossil 40 exhaust aftertreatment systems 40 FCVs 40 diesel exhaust 40 Ford Focus ECOnetic 40 Renewable energies 40 sulfur coal 40 sulfur dioxide emissions 40 jatropha 40 methanol ethanol 40 cheapest cleanest 40 SO2 emissions 40 Nitrogen Oxide NOx 40 E# blend 40 cellulosic biorefineries 40 CO2 emmissions 40 GhG emissions 40 fleetwide average 40 edible feedstocks 40 RON# petrol 40 emit pollutants 40 Standard LCFS 40 Standard RFS 40 Low Emissions Vehicle 40 Hydrogen Fuel Cell 40 Rentech Fischer Tropsch 40 aftertreatment 40 particulate pollutants 40 noxious pollutants 40 biopower 40 diesel powerplants 40 largest polymers petrochemicals 40 CO2 40 effi cient 40 biomass gasifier 40 American Jianye 40 hybrids PHEVs 40 BEVs 40 bioethanol 40 inefficient lightbulbs 40 harmful tailpipe emissions 40 baseload generating 40 Borroni Bird 40 ULEV II emissions 40 enviromentally friendly 40 sequester greenhouse gas 40 FlexFuel vehicles 40 diesel aftertreatment 40 sour crudes 40 hydrofluorocarbons HFCs 40 Carbon Capture 40 CO2 emission reductions 40 Sulfur compounds 40 HFC #a 40 Next Generation Networks NGNs 40 vegetable oils 40 Clean Fuels Coalition 40 condensing boilers 40 turbocharged engines 40 Calstart 40 Ethanol Blended 40 cellulosic E# 40 Retrofit Ramp Up 40 Bluetec diesel 40 greenpower 40 Southland lignite 40 leaded gasoline 40 sequester CO2 40 Repowering 40 ETBE 40 re gassified LNG 40 LNG Liquefied Natural Gas 40 Nagusky 40 biogas 40 Gordon Quaiattini 40 HCFC refrigerants 40 NExBTL diesel 40 Great Lakes steamships 40 quadricycles 40 nonroad engines 40 supercritical coal 40 Ecotec engines 40 sweet crudes 40 efficient compact fluorescents 40 sub bituminous coal 40 liquified petroleum gas 40 nonfood feedstocks 40 liquefied gas 40 biodegradable plastics 40 tar sands 40 NAT GAS Act 40 Meri Pori 40 particulate matter emissions 40 coalfired 40 Fischer Tropsch FT 40 greenhouse gas GHG emissions 40 weans itself 40 AB# mandates 40 evaporative emissions 40 RSPO certified palm 40 Carbon Sequestration Leadership 40 Methyl tertiary butyl ether 40 greenhouse gas GHG 40 injection diesels 40 detergent additives 40 hybrid electrics 40 CleanFUEL USA 40 Selective catalytic 40 petro diesel 40 cooled Exhaust 40 cooking stoves 40 reformulated gasoline RFG 40 GHG reductions 40 RTFO 40 GHG Tailoring Rule 40 anaerobic digesters 40 global warming gasses 40 proprietary Fischer Tropsch 40 gasification 40 gas guzzling trucks 40 sooty particles 40 highly scalable biocatalytic 40 gas guzzling 40 petcoke 40 Syngas 40 liquefied petroleum gas 40 Bioethanol 40 diesel particulate emissions 40 greenhouse gas emitters 40 geo sequestration 40 inefficient incandescent light 40 Greenhouse Gas Tailoring Rule 40 octane gasoline 40 biorenewable fuels 40 boilers 40 Fosgard 40 R #A refrigerant 40 Renewable Energy Directive 40 TCA grading 40 Adarsh Stations 40 gasolines 40 HEVs 40 CSNOx 40 hydrotreating 40 hydrokinetic technologies 40 commissioner Gunther Oettinger 40 Capstone microturbine 40 BluePerformance 39 nonpolluting renewable 39 automakers retool 39 tailpipe standards 39 AT PZEV 39 Fossil fuels 39 CALSTART 39 Plc RDSa.L 39 Saab BioPower 39 Pearl GTL project 39 PEM fuel 39 ozone depleting compounds 39 Natural Gas Vehicle 39 ozone precursors 39 sulfur dioxide nitrogen oxide 39 electric propulsion 39 CO ₂ emissions 39 synthetic liquid hydrocarbons 39 MARPOL Annex VI 39 Amanda Eaken 39 E# Ethanol 39 Leaded petrol 39 acrylic esters 39 LPG liquefied petroleum 39 smoggiest skies 39 Cleaire 39 mandatory emission reductions 39 palm oil 39 nitrous oxide NOx 39 Audi TDI 39 Hythane ® 39 hypermiling techniques 39 cook stoves 39 RenDiesel ® 39 Diesel Exhaust Fluid DEF 39 ecologically friendly 39 E# fueling 39 nitrogen dioxide emissions 39 diesel particulate filter DPF 39 gasolene 39 compact fluorescent bulbs CFLs 39 edible vegetable oils 39 peaker plants 39 Icom JTG 39 inefficient incandescent bulb 39 eco friendlier 39 feedstock naphtha 39 hydraulic hybrid 39 gasify coal 39 Bio SNG 39 Saturn Vue plug 39 retrofits 39 Gas Emissions 39 sulfur coals 39 curb suburban sprawl 39 hybrid 39 dPollution Device 39 hydrocarbon feedstocks 39 electrically powered vehicles 39 Buick LaCrosse Eco 39 thermo chemical 39 polluters 39 Industrialised countries 39 Cellulosic 39 lpg 39 Low Emission Vehicle 39 RenDiesel 39 Hydrogen Fuel Initiative 39 pellet stoves 39 biobased products 39 BLUETEC 39 Emission Trading Scheme 39 Reduce Emissions 39 naphtha feedstock 39 carbon emission allowances 39 quantified emission 39 ZEV 39 smog forming compounds 39 internal combustion 39 GE ecomagination initiative 39 carbon dioxide 39 Coleson Cove 39 powerplants 39 ecologically sound 39 biomass feedstocks 39 hydroprocessing 39 biomass pellets 39 CO2 emission allowances 39 greener motoring 39 Compact Fluorescent Lamps CFLs 39 Ecospec 39 Focus FCV 39 electric Chevrolet Volt 39 Oryx GTL plant 39 electric hybrid 39 burning fossil fuels 39 dung charcoal 39 reciprocating engine 39 paraffin candles 39 polymers petrochemicals 39 petroleum 39 CO2emissions 39 GHPs 39 TxLED 39 heavy sour crudes 39 Synthetic fuels 39 baseload 39 low linolenic soybean 39 oxidised burned 39 hybrid propulsion 39 emmisions 39 coal petroleum coke 39 feul 39 Hydrogen Internal Combustion 39 Terralene 39 smallholder agriculture 39 blowdown drums 39 downsized turbocharged 39 pulverized coal 39 wood burning stoves 39 LCFS 39 compact fluorescent lights 39 Susanne Garfield 39 lignocellulosic 39 sequestering carbon dioxide 39 gas swilling Hummers 39 Ethanol 39 heat trapping emissions 39 gasifies coal 39 ODSs 39 GHU ® 39 Softwood hardwood 39 combustion modification 39 lighter crudes 39 Dual Fuel 39 TSX WPT 39 HSFO 39 greenhouses gases 39 biomass combustion 39 blendstock 39 optimized biocatalysts 39 Soy biodiesel 39 emit greenhouse gasses 39 sulfur distillate 39 methyl halides 39 liquids CTL 39 hybrids plug ins 39 PX Pressure Exchanger 39 Riisgaard 39 ethane feedstock 39 Karen Schkolnick spokeswoman 39 MixAlco 39 ethanol methanol 39 carbon dioxide emitters 39 E# [004] 39 #g CO2/km [001] 39 ethanol distilleries 39 MaxxForce ® brand 39 oxygenate MTBE 39 Nova Biosource 39 alleviating congestion 39 Brazilian Sugarcane Industry 39 nonattainment areas 39 biogenic carbon 39 NOx SOx 39 drought tolerant hybrids 39 manmade greenhouse gas 39 emitting carbon dioxide 39 FiTs 39 enegy 39 environmental sustainability 38 liquids GTL 38 R#a 38 electrics hybrids 38 Nitrogen oxide emissions 38 diesel gensets 38 Carbon dioxide emission 38 spark ignition 38 SmartWay certified 38 polluting industries 38 thriftier 38 regulating tailpipe 38 enrgy 38 desalinating seawater 38 Renewable energy 38 cleanest diesels 38 Cathy Milbourn 38 incinerators 38 desalination 38 resultant gooey 38 Renewables Directive 38 agrofuel production 38 direct injection turbocharging 38 ECO Pedal 38 sustainable 38 Mercedes Benz BlueTEC 38 Ltd KPRL 38 octane petrol 38 Rentech Process 38 hydrochlorofluorocarbon 38 autocatalysts 38 Steve Fludder 38 Frank Gorke 38 wood pellets 38 Incandescent lamps 38 Renewable Obligation 38 mercury emissions 38 reduce smog forming 38 non sniffable Opal 38 Industrialized countries 38 H2ICE 38 Cement kilns 38 Deborah Seligsohn 38 wood stoves 38 Zero Emission Vehicle ZEV 38 DCGT 38 combined cycle IGCC 38 nitrous oxide emission 38 Speed limiters 38 petroleum coke 38 Shosteck 38 Greenhouse gasses 38 greenhouse gases GHGs 38 -Frito Lay snack foods 38 Sasol CTL 38 Maximum Achievable Control 38 wood burners 38 AutoGas 38 Prady Iyyanki CEO 38 ethanol butanol 38 arbitrary numerical 38 TOP TIER Detergent Gasoline 38 hydroprocessing catalysts 38 sulfur dioxide SO2 emissions 38 biobased 38 harmful pollutants 38 Liquified natural 38 Large Combustion Plant 38 unjustifiable loopholes 38 Jatropha cultivation 38 Co2 emissions 38 ecofriendly 38 biobased fuels 38 V6 engines 38 Diesel Particulate Filters 38 IPPC directive 38 Capstone microturbines 38 ASFE 38 pollutants 38 nitrogen oxides particulate matter 38 JNNSM 38 emitting CO2 38 smokestack emissions 38 regulating tailpipe emissions 38 efficient 38 SeQuential 38 DeNOx 38 Greenhouse Gas Reduction 38 RFS2 38 Renewable Obligation Certificates ROCs 38 environmentallyfriendly 38 hydrofluorocarbon HFC 38 heat trapping greenhouse 38 garbage incinerators