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(Click for frequent words.) 58 polluting fossil fuels 57 nonfossil fuel 57 fossil fuels 55 hydrogen fuel 54 zero emission 54 alternative fuels 53 bio diesels 53 renewable 53 Coal gasification 53 fossil fuel 53 Propane autogas 52 hydrogen powered 52 environmentally benign 52 internal combustion engine 52 renewable energy 52 biodiesels 52 internal combustion engines 51 nonpolluting renewable 51 cleaner burning 51 renewably generated 51 biodiesel fuels 51 cleanest burning 50 environmentally friendly 50 carbon emitting 50 Internal combustion engines 50 baseload renewable 50 peaker plants 50 renewable fuels 50 Incandescent bulbs 50 combustion engines 50 hydrogen combustion engine 50 cleaner fuels 50 PHEVs 50 Compressed natural 49 combustion engine 49 hydrogen 49 windmills solar panels 49 gasified coal 49 finite fossil fuels 49 hybrids plug ins 49 liquefied coal 49 nonrenewable sources 48 hybrid powertrains 48 biofueled 48 switchable batteries 48 alternative energies 48 electric drivetrains 48 cleanest fossil 48 fuel efficent 48 virtually inexhaustible 48 biofuel 48 cellulostic ethanol 48 V2G 48 hybrids 48 solar panels windmills 47 nuclear fission reactors 47 hybrids diesels 47 environmentally sound 47 Fluorescent bulbs 47 biofuels 47 cheapest cleanest 47 fission reactors 47 bio fuels 47 smog forming pollutants 47 Hydrogen 47 wind turbines solar panels 47 nonrenewable fuels 47 diesel powered 46 nonrenewable fossil fuels 46 ZEVs 46 environmentally friendlier 46 hybrid electric 46 mimics photosynthesis 46 alternatively fueled 46 glorified golf carts 46 recyclable paperboard 46 Biomass gasification 46 diesels 46 safest cleanest 46 dirtiest fossil 46 vehicles EVs 46 EVs 46 polluting 46 biomass combustion 46 vehicles NGVs 46 GHG emitting 46 propane autogas 46 bio diesel fuels 46 Focus FCV 46 Cellulosic ethanol 46 burning gaseous fuels 46 cleaner greener 46 ecologically friendly 46 Solartopia 46 algal biofuel 46 Pellet stoves 46 Honda Civic GX 46 gasifying coal 46 Volkswagen TDI 45 Renewable fuels 45 MixAlco 45 guzzling appliances 45 PureCycle R 45 Renewable energy 45 oxyhydrogen 45 internal combustion 45 HumanCar 45 baseload electricity 45 batteries supercapacitors 45 electric drivetrain 45 TSX WPT 45 fossile fuels 45 algae biofuel 45 noncarbon 45 photovoltaics PVs 45 biofuel blends 45 biodegradable nontoxic 45 forest thinnings 45 conventional combustion engines 45 diesel 45 Sugarcane ethanol 45 hybrid drivetrains 45 ZENN 45 flexfuel vehicles 45 biodiesel 45 photosynthetic microorganisms 45 feebates 45 CNG Compressed Natural Gas 45 Soy biodiesel 44 electrically powered 44 enviromentally friendly 44 B5 biodiesel 44 biodeisel 44 cellulose ethanol 44 environmentally sustainable 44 Fossil fuels 44 bioheat 44 renewable energies 44 nonroad diesel 44 desalinate water 44 ethanols 44 Rooftop solar panels 44 Bluetec diesel 44 tailpipe emission 44 Traditional incandescent bulbs 44 cellulosic materials 44 liquefying coal 44 tailpipe exhaust 44 electric propulsion 44 wood pellet heating 44 rooftop photovoltaic panels 44 conventional internal combustion 44 Tribute HEV 44 gobar gas 44 lithium ion batteries 44 cellulosic fuels 44 IGCC plants 44 liquefied hydrogen 44 sulfur fuels 44 zero tailpipe emissions 44 powerplants 44 Rainwater harvesting 44 quadricycles 44 inefficient incandescent bulbs 44 automobiles 44 Hythane R 44 hybrid Toyota Prius 44 de carbonizing 44 CO2 emitting 44 ethanol bio diesel 44 gas sippers 44 lithium titanate batteries 44 cleaner quieter 44 liquid fuels 44 electric hybrid powertrain 44 renewably 44 decarbonise 44 methyl halides 44 decarbonizing 44 solar photovoltaics 44 electric 44 nickel hydride batteries 43 electric hybrid 43 greenhouse gas emitting 43 environmentally beneficial 43 Concentrating solar 43 petrodiesel 43 cellulosic bioethanol 43 Flexible Fuel Vehicles 43 Board ENEI 43 Tailpipe emissions 43 gas guzzling automobiles 43 incandescent lightbulbs 43 NGVs 43 carbon dioxides 43 decarbonised 43 antipollution 43 nanotechnology supercomputing 43 tailpipe emissions 43 ethanol 43 ethanol butanol 43 gas sipper 43 PEM fuel 43 diesel engines 43 EREV 43 hybrids PHEVs 43 hybrids electrics 43 Borroni Bird 43 Hybrids 43 propane AutoGas 43 biomass 43 microturbines 43 PHEV 43 bio diesel 43 Escape Hybrid E# 43 ion batteries 43 exhaustible 43 gas swilling Hummers 43 li ion batteries 43 cofiring 43 gas guzzling autos 43 Hypercar 43 gasohol 43 biopower 43 RenDiesel fuel 43 solar panels 43 ecologically sound 43 gas guzzling behemoths 43 octane enhancer 43 Wiesenfelder 42 maglev trains 42 filament bulbs 42 Hydrogen Internal Combustion 42 Transport Fuels Obligation 42 CODA Sedan 42 environmentally 42 smokestack pollutants 42 Electric Vehicles EVs 42 Technological breakthroughs 42 thermoelectric materials 42 zero tailpipe emission 42 internal combustion engined 42 liquid electrolytes 42 unmodified diesel 42 BEVs 42 Photovoltaic solar panels 42 electric Chevrolet Volt 42 cellulostic 42 rechargeable hybrid 42 retool factories 42 pollutive 42 weans itself 42 hybrid 42 smog forming emissions 42 Compressed Natural Gas 42 soy biodiesel 42 photosynthetically 42 inefficient incandescent bulb 42 geothermal tidal 42 B# biodiesel [002] 42 Lithium ion 42 decarbonized 42 nonrenewable resources 42 Saturn Vue hybrid 42 solar panels wind turbines 42 methane digesters 42 Zero Emission Vehicle ZEV 42 greener cleaner 42 exhaust emissions 42 Honda Civic hybrid 42 Hydrogen Economy 42 recycle CO2 emitted 42 efficient fluorescent bulbs 42 vehicles FFVs 42 emitting greenhouse gases 42 smokestack scrubbers 42 dirtier fuels 42 lamps CFLs 42 Annette Kondo 42 Jim Crouse Capstone 42 sulfur diesel fuel 42 renewables 42 butane cartridges 42 cleanest internal combustion 42 PZEVs 42 geothermal hydro 42 Vegan diets 42 energy 42 Spinning flywheels 42 smog forming 42 polymer electrolyte membrane 42 electrically driven 42 ecologically conscious 42 Capstone microturbine 42 biomass fuels 42 Renewable 42 Fast breeder reactors 42 Incandescent lights 42 lignocellulosic ethanol 42 Toyota RAV4 EV 42 Ford Focus BEV 42 Centia TM 42 ultracapacitors 42 reduce carbon emissions 42 pyrolysis oils 42 carbon dioxide emissions 42 Coda Automotive 41 Saturn Vue plug 41 flexfuel 41 FreedomCAR 41 Solartopian 41 Civic GX 41 dimethyl ether DME 41 recyclable plastics 41 DiesOtto 41 solar concentrator systems 41 enegy 41 batteries ultracapacitors 41 transform CO2 emitted 41 nonfood crops 41 incandescent lightbulb 41 compact flourescent 41 bioethanol E# 41 en ergy 41 fuel 41 biogas biomass 41 hybird 41 algae biofuels 41 O2Diesel ™ 41 waste decomposes 41 Hydrogen Fuel Cell 41 transplantable cells 41 cleaner 41 BlueZERO concept 41 carbon belching 41 ethanol blended 41 electrically powered vehicles 41 piezoelectrics 41 E# ethanol 41 powered leaf blowers 41 mercury vapor lamps 41 cogeneration plants 41 FCVs 41 Bioethanol 41 powered lawn mowers 41 PINKSHEETS WTWO developer 41 biohydrogen 41 particle filters 41 environmentally damaging 41 XEBRA 41 environmentally harmful 41 solar concentrators 41 Incandescent lamps 41 E# flex 41 compressed hydrogen 41 marshmallow pies 41 Saphion technology 41 bio ethanol 41 urea injection 41 EV HEV 41 Flexible Fuel 41 baseload 41 exhaust emission 41 Clothes dryers 41 Biomass boilers 41 crystalline silicon panels 41 nonfossil 41 petrol engined cars 41 linear fluorescent lamps 41 Cellulose ethanol 41 offshore windpower 41 desalinization 41 RedEye Supriya Doshi 41 AT PZEV 41 horseless carriages 41 renewable feedstocks 41 burn wood pellets 41 photovoltaic arrays 41 Kiyora 41 CO -2 emissions 41 curb suburban sprawl 41 electrics hybrids 41 proton exchange 41 nontoxic biodegradable 41 agriculturally derived 41 cellulosic ethanol 41 diesel particulate filters DPFs 41 Fischer Tropsch fuels 41 Direct FuelCells 41 electric powertrains 41 grid V2G 41 Mitsubishi iMiev 41 emmission 41 lithium phosphate 41 breeder reactors 41 eco friendly 41 biomass geothermal 41 converting cellulose 41 fry grease 41 cellulosic E# 41 ZAP Xebra 41 biomass biogas 41 reduce greenhouse gasses 41 Li ion batteries 41 electrically propelled 41 Aptera Motors 41 sooty particles 41 multifuel 41 bioenergy feedstocks 41 RenDiesel 41 emmissions 40 cow manure 40 negawatts 40 coco biodiesel 40 global warming gases emitted 40 voltaic 40 OWBs 40 stringent emission 40 sugar cane bagasse 40 MTBE additive 40 solar photovoltaics PV 40 Dodge ZEO 40 nitrogen oxide NOx emissions 40 Amanda Eaken 40 liquified gas 40 EcoLogo certified 40 environmentally unsound 40 alternative 40 nontoxic sulfur 40 greenhouse gases 40 decarbonize 40 FFVs 40 Toyota Prius hybrid 40 EVCARCO OTCBB EVCA 40 compact fluorescent lightbulbs 40 replenishable 40 hybrid PHEV 40 solar 40 Waterless urinals 40 emission 40 Lithium ion batteries 40 Hydrovolts 40 emit CO2 40 Toyota Priuses 40 hydrocarbons nitrogen oxides 40 Gremban 40 manure digesters 40 paraffin candles 40 Audi TDI 40 inefficient incandescent light 40 Autolib 40 willyoujoinus.com 40 hybrid electrics 40 carsharing 40 cityZENN 40 analyst Jens Riese 40 hydraulic hybrid 40 Saphion R 40 agro fuels 40 Compact fluorescents 40 iMiEV 40 oxyfuel combustion 40 alterative 40 super capacitors 40 flex fuel 40 Andrew J. Littlefair 40 NiMH nickel 40 Solid Oxide Fuel Cells 40 Carbon dioxide emissions 40 Scramjets 40 Softwood hardwood 40 thermochemical processing 40 woodburning stoves 40 Grätzel cells 40 hydrogen fueling 40 ultralow sulfur 40 electric hybrids 40 convert cellulosic biomass 40 Sun Catalytix 40 motorized recreational 40 vehicles AFVs 40 patented Airtrax wheel 40 photosynthetic algae 40 environmentallyfriendly 40 harmful tailpipe emissions 40 environmentally considerate 40 PEVs 40 Switchgrass 40 efficient 40 GHG greenhouse gas 40 economically unsound 40 Aptera 40 NASDAQ WPRT global 40 Equinox Fuel Cell 40 cookstoves 40 gasified 40 emit carbon dioxide 40 GHG abatement 40 Direct FuelCells efficiently 40 drayage trucks 40 lithium ion 40 NASDAQ BLDP provides 40 guzzling SUVs 40 biodegradable plastics 40 gas guzzling 40 diesel powertrains 40 hydrokinetic energy 40 corn stalks switchgrass 40 ethanol methanol 40 petrol guzzling 40 uneconomically 40 Cleaire 40 greenhouse gasses 40 Hybridfest 40 gasify coal 40 Integrated Gasification Combined Cycle 40 General Motors EV1 40 Incandescents 40 incandescent light bulb 40 Soy candles 40 kilowatt microturbine 40 GE WattStation 40 V6 engines 40 desalinization plants 40 compression ignition engines 40 Ultra Low Emissions 40 battery powered 40 Cellulosic biofuels 40 V6 turbodiesel 40 Compact fluorescent bulbs 40 nonrenewable 40 RenDiesel ® 40 fast pyrolysis 40 electric Nissan Leaf 40 Light emitting diodes 40 biocrude 40 regulating tailpipe emissions 40 SunHydro 40 HCNG 40 cleanest diesel 40 sporty CR Z 40 Remy HVH 40 emitting carbon dioxide 40 HCCI engines 40 carmakers retool 40 hybrid Prius 40 Coselle TM 40 wood stoves 40 Biofuel 40 methanol ethanol 39 Installing solar panels 39 ZAP X 39 Scirocco GT# CNG 39 particulate filters 39 Compact Fluorescent Lamps CFLs 39 hydronic heaters 39 nonpetroleum 39 Toyota Prius 39 biogases 39 Incandescent light 39 biodiesel feedstocks 39 gassification 39 BlueTec 39 pollutants emitted 39 Ultracapacitors 39 desalinate seawater 39 fuels 39 Aptera 2e 39 Citroen Survolt 39 sugar cane ethanol 39 EESU 39 wood pellet stoves 39 Fosgard 39 turbocharged engines 39 hydrofluorocarbon HFC 39 electrolyzers 39 garbage incineration 39 biobased chemicals 39 light emitting diodes LED 39 carbondioxide emissions 39 Desalinated water 39 WyGen 39 gasifies coal 39 BUSINESS WIRE UQM TECHNOLOGIES 39 environmentaly friendly 39 Ann Mesnikoff director 39 thermoelectricity 39 compressed natural 39 Fiesta ECOnetic 39 fuel additive MTBE 39 DeNOx 39 smog forming pollution 39 patented Direct FuelCell 39 cellulosic wastes 39 emissions 39 solar powered 39 #g CO2/km [001] 39 Low sulfur diesel 39 Motorized scooters 39 Riversimple 39 dispatchable 39 Extreme Hybrid 39 LEVs 39 Rooftop gardens 39 Biomethane 39 hybrid driveline 39 fusion fission 39 autogas 39 air pollutants emitted 39 Reusable bags 39 S.U.V. s 39 biodegradable bags 39 cleanest greenest 39 regulating tailpipe 39 DSSCs 39 erect windmills 39 Compact fluorescent lights 39 renewably sourced materials 39 rice husks 39 ClearEdge Power 39 LPG CNG 39 cleanest safest 39 combustion engined 39 BioEthanol 39 HEVs PHEVs 39 efficient compact fluorescents 39 coalfired 39 Solar panels 39 economically viable 39 biofuel feedstocks 39 biodegradeable 39 Bio DME 39 Vehicles FFVs 39 noxious pollutants 39 LED lightbulbs 39 gas guzzling trucks 39 Therese Langer 39 Subaru R1e 39 streamliners 39 AFV Solutions 39 R #A refrigerant 39 photovoltaics 39 garbage incinerators 39 Renewable energies 39 Coda sedan 39 methane digester 39 watering lawns washing 39 sugar beet seeds 39 coal fired 39 solar photovoltaic cells 39 incandescent bulb 39 geothermal hydroelectric 39 SteamRay 39 Replace incandescent bulbs 39 ITER reactor 39 Mercedes Benz E# Bluetec 39 sipping hybrids 39 Rentech Fischer Tropsch 39 conventional combustion engine 39 biomass cogeneration 39 electrolyzer 39 photovoltaic cells 39 bio digesters 39 Tiguan HyMotion 39 Powerpacks 39 fluorescent bulbs 39 Photovoltaic panels 39 bio butanol 39 biofuel N Viro 39 Catalyx Nanotech 39 WestStart CALSTART 39 Vehicles PHEVs 39 mercury vapor lights 39 Biodegradable plastics 39 erecting wind turbines 39 Roettgen 39 Carbon dioxide emitted 39 Burrard Thermal 39 cookstove 39 enery 39 electricity 39 enviro friendly 39 coal gasification 39 synthetic fuels 39 Trabant nT 39 Fischer Tropsch process 39 photocatalysts 39 tailpipe standards 39 quadricycle 39 Konarka builds 39 superconducting magnetic 39 Tesla Motors Roadster 39 tungsten filament 39 cellulosic feedstocks 39 coal liquefaction 39 E# biofuel 39 Hythane 39 Fiat MultiAir 39 CFL compact fluorescent 39 Compact fluorescent lamps 39 efficient lightbulbs 39 Solutions eHs specializes 39 biobutanol 39 Homogeneous Charge Compression Ignition 39 compact fluorescent bulbs 39 wood pellet boiler 39 Zero Emission Vehicle 39 tungsten bulbs 39 environmentally responsible 39 engergy 39 LFTR 39 Lithium Ion batteries 39 switcher locomotives 39 cellulosic sugars 39 greenhouse gas emissions 39 Patrick Serfass 39 Zap Xebra 39 Chevrolet Volt Chevrolet Cruze 39 solar cells 38 liquefication 38 Daniel Nocera 38 combustors 38 desalinating seawater 38 Twizy ZE 38 compact fluorescents 38 converting cellulosic biomass 38 Vehicle FFV 38 gas guzzling SUVs 38 Mielewski 38 gas guzzlers 38 algae biomass 38 spew pollutants 38 artificial photosynthesis 38 efficient LED bulbs 38 tankless heater 38 Audi A3 TDI 38 Energy CCSE 38 particulate emission 38 solar paneled 38 HEVs 38 Saphion 38 cellulosic biomass 38 Electric Vehicle 38 Thermoelectrics 38 Synthetic biology 38 Edison2 38 coal petroleum coke 38 Furai concept 38 Yellow Cab Cooperative 38 hydrogen rotary 38 electrolyze 38 Bluetec diesel engine 38 BMW Vision EfficientDynamics 38 Ron Gremban 38 shale tar sands 38 Polo BlueMotion 38 florescent bulbs 38 greenhouse gas 38 electric Tesla Roadster 38 gaseous fuels 38 graphite foam 38 GM EV1 electric 38 CNG LPG 38 conventionally powered 38 Remy HVH electric 38 scramjets 38 Mercedes Benz BlueTEC 38 autonomous robotic 38 trackless trolleys 38 #yf 38 PEMFCs 38 de carbonisation 38 Volt lithium ion 38 kilns mills 38 pellet stoves 38 horseless carriage 38 HFC refrigerants 38 combustion 38 agrofuels 38 LIFECar 38 magnetic levitation trains 38 Honda Insight 38 carbon dioxide emitted 38 biomethane 38 desalinate sea 38 electric motors 38 emit greenhouse gases 38 inexhaustible 38 ecofriendly 38 Speed limiters 38 CO2 sequestration 38 ethanol blends 38 hydrail 38 fluorocarbons 38 regulate greenhouse gases 38 Reverse osmosis 38 UQM ® 38 microturbine 38 ePower Synergies 38 UQM TECHNOLOGIES INC. 38 FCX Concept 38 Haber Bosch process 38 CARB compliant 38 Obvio 38 electrolysers 38 smoggiest regions 38 conventional pulverized coal 38 automakers retool 38 E# Ethanol 38 ProSep designs develops manufactures 38 bioethanol 38 stricter emission 38 commercially viable 38 urban runabout 38 Kerosene lamps 38 Direct FuelCell 38 hulking SUVs 38 MiEV 38 propulsion 38 photobioreactors 38 emitting CO2 38 octane leaded 38 superefficient 38 conductive polymers 38 propane Autogas 38 pellet boiler 38 Chevy Equinox crossover 38 fuelcell 38 Chevy Volt electric 38 sequester CO2 38 environmentally conscious 38 CAFÉ standards 38 harmful gasses 38 ZEV 38 subcompact Fiesta 38 Nissan ESFLOW 38 incandescent bulbs 38 bio diesels syngas 38 Light Emitting Diodes LEDs 38 soot belching 38 CODA Automotive 38 biomasses 38 Volt powertrain 38 Diesel particulate filters 38 Engines HICE 38 Chevy Equinox Fuel Cell 38 desalinating water 38 Bluesport 38 fluorescents 38 XH TM 38 BioWillie 38 Gerbrand Ceder 38 Capstone microturbines 38 photoelectrochemical cell 38 hydro biomass 38 Volvo C# DRIVe 38 AutoPort 38 HyProStar 38 cyclic carbonates 38 commercialize cellulosic ethanol 38 biomass feedstock 38 Escape Hybrid SUV 38 environmentally unfriendly 38 Honda FCX 38 e jeepneys 38 galvanic vestibular stimulation 38 Remy electric motors 38 Solazyme oils 38 Saab BioPower 38 photo voltaic panels 38 EV1s 38 Bio fuels 38 emissons 38 biogas 38 phosphor powder 38 solar voltaics 38 virgin vegetable oils 38 odd numbered license plates 38 biogasoline 38 CleanCharge ™ 38 Howard Learner 38 Tesla Roadster 38 Hybrid Synergy Drive 38 Buick LaCrosse Eco 38 algae 38 Low Emissions Vehicle 38 S# Hybrid 38 decarbonisation 38 ECO Pedal 38 nonroad 38 Kerosene heaters 38 nitrogen oxide burners 38 photo voltaics 38 unheated garages 38 curbing carbon emissions 38 FCX Clarity fuel 38 solar thermal 38 temperature superconducting wires 38 Ford Taurus sedans 38 Barthmuss 38 Ecotec engines 38 converts kinetic 38 saving compact fluorescent 38 Solar concentrators 38 incandescent halogen 38 desalinized water 38 About ZAP ZAP 38 deplete ozone 38 leaded petrol 38 humanure 38 tailpipe pollution 38 wood pellets 38 Environmentally friendly 38 WindCube 38 eco friendlier 38 photo voltaic solar panels 38 LUXEON LEDs 38 BYD F3DM 38 Steve Prucnell builds 38 Indica EV 38 thermoacoustic 38 SUVs pickups 38 indefinitely suspend AB# 38 BlueTec diesel technology 38 buckypaper composites 38 sugarcane bagasse 38 wind biomass geothermal 38 BlueTec diesel 38 vehicles PEVs 38 emit pollutants 38 feebate 38 Chevrolet Equinox Fuel Cell 38 Roadster accelerates faster 38 ketone bodies 38 #W light bulb 38 Mixim 38 Hydrogen RE 38 SCR Selective Catalytic Reduction 38 Hybrid Vehicle 38 hydrofluorocarbons HFCs 38 FlexEnergy 38 smoggiest skies 38 Calstart 38 incandescent light 38 fume belching 38 wind turbines 38 rotary engine 38 cellulosic biofuels 38 molecular assemblers 38 sulfur dioxide pollutant 38 Rentech synthetic 38 gas guzzling cars 38 Stahlkopf 38 concentrated photovoltaic CPV 38 gas guzzling vehicles 38 Electrically powered 38 recharging stations 38 Desalinization 38 sulfur sub bituminous 38 Malibu Hybrid 38 nuclear fission 38 nonfossil fuels 38 Transit Connect BEV 38 HydroGen3 38 Vincent Chornet 38 Biodiesel 38 biodigester 37 electric powertrain 37 Bloom Boxes 37 E Tracer 37 EcoBoost engines 37 HID fixtures 37 REVAi 37 B# biodiesel [001] 37 greenhouse emissions 37 nanomotors 37 denatured ethanol 37 photo voltaic solar 37 Infiniti M#h 37 microcars 37 Golf BlueMotion 37 dispense E# 37 Flexible Fuel Vehicle 37 bioenergy 37 crossover SUVs 37 GM EV1 37 environmentally friendly refrigerants 37 cars 37 SKYACTIV G 37 myco diesel 37 pellet burning stoves 37 circulator pumps 37 Photovoltaics PV 37 DesertXpress train 37 Manufacturing Incentive Program 37 Deron Lovaas 37 Haubenschild 37 harmful pollutants 37 CFLs compact fluorescent