Related by context. Frequent words. (Click for all words.) 56 Christopher Flavin 52 Kevin Knobloch 49 Dan Arvizu 49 Jeffrey Holmstead 49 CO2 emission reduction 48 Audra Parker 48 Fatih Birol chief 48 Worldwatch 48 Noah Horowitz 47 TIAX 47 Paul Anastas 46 Jonathon Porritt 46 Shawn Patrick Stensil 46 Mark Jaccard 46 CO2 emission reductions 46 Jane Houlihan 45 Paul Golby 45 Cathy Zoi 45 Stephan Singer 45 Ralph Cicerone 45 Vickie Patton 45 Edwin Lyman 44 Frances Beinecke 44 Bernadette Del Chiaro 44 Schellnhuber 44 Benjamin H. Grumbles 44 Faisal Moola 44 EPRI 44 perfluorocarbons 44 KISR 44 Howard Learner 44 Gal Luft 43 Rhone Resch 43 Burning fossil fuels 43 biomass geothermal 43 biomass combustion 43 David Sandalow 43 Bjørn Lomborg 43 Renewable fuels 43 hydro geothermal 43 Helen Caldicott 43 USCAR 43 Frank Maisano 42 Frank Maisano spokesman 42 Fred Krupp 42 levelized cost 42 Joseph Romm 42 Ecofys 42 Toxics Link 42 Peter Gleick 42 James Lovelock 42 reducing CO2 emissions 42 CO ² emissions 42 #.#GW [003] 42 Steven Milloy 42 exhaustible 42 fossil fuel 42 Sunita Narain 42 #TWh [002] 42 Matthew Bramley 42 Terry Tamminen 42 carbon emission reductions 42 Electric Reliability Coordinating 42 Daniel Sperling 42 IHS Cambridge 42 Chameides 42 Michael Liebreich 42 Jeff Sterba 42 Zhang Guobao 42 Earth Cymru 41 renewable 41 carbon dioxide emitters 41 GCEP 41 renewable energy 41 Klaus Toepfer 41 renewables 41 ozone layer depletion 41 SRNL 41 CO2 Emissions 41 Xie Zhenhua 41 nitrogen oxide NOx emissions 41 Coal gasification 41 EERE 41 CO2 Capture 41 reducing greenhouse gas 41 Jay Keasling 41 fossil fuels 41 Myron Ebell 41 Natural Resources Defense 41 Jason Grumet 40 GWEC 40 Koomey 40 greenhouse gas 40 Renewable energies 40 Amory Lovins 40 Dumesic 40 Devinder Sharma 40 Alivisatos 40 decarbonize 40 Steven Guilbeault 40 Philip Clapp