Related by context. Frequent words. (Click for all words.) 54 Nancy Gioia 49 Daniel Sperling 49 John Wolkonowicz 49 David Doniger 48 Tyson Slocum 47 George Magliano 46 Natural Resources Defense 45 CALSTART 45 Concerned Scientists 45 Daniel Yergin chairman 45 Michelle Krebs 45 George Pipas Ford 44 Paul Ballew 44 Philip Clapp 44 Jeff Tittel 44 Joseph Romm 43 Joseph Cirincione 43 Energy Efficient Economy 43 Judy Dugan 43 Dennis DesRosiers 43 Jared Blumenfeld 42 alternative fuels 42 Joel Makower 42 Amory Lovins 41 Jesse Toprak 41 Mike DiGiovanni 41 Erich Merkle 41 Ellen Hughes Cromwick 41 Gary Samore 41 George Pipas 41 Barry Steinhardt 41 ACEEE 41 Joan Claybrook 40 Sean McAlinden 40 Ed Mierzwinski consumer 40 Brendan Cummings 40 Jean Halloran 40 Edmunds.com automotive 40 GELLERMAN 39 Nancy Sutley 39 DesRosiers 39 Kieran Suckling 39 David Bookbinder 39 analyst Dennis DesRosiers 39 hypermiling 39 Sandalow 39 Casesa 39 Sean McAlinden chief 39 Tom Buis 38 Honda Civic GX 38 IHS Automotive 38 Sierra Club 38 Daryl Kimball 38 powertrain 38 Krafcik 38 Clean Fuels 38 Joe Phillippi 38 Alden Meyer 38 IRN Inc. 38 Jack Kyser 38 Fuel Efficiency 37 Renewable fuels 37 renewable fuels 37 hydrogen fuel 37 Anwyl 37 Ethanol Vehicle 37 Winslow Wheeler 37 Ivan Eland 37 gas guzzling SUVs 37 enviros 37 LaNeve 37 CAFE standards 37 hydrogen powered 37 hybrids 37 fuel 37 Len Nichols 37 diesel 37 Chris Preuss 37 Ken Hardie 36 NRDC 36 David Lochbaum 36 PHEV 36 Chevy Volt 36 Jack Nerad executive 36 John Casesa 36 hybrid electric 36 Marion Nestle 36 IHS Cambridge 36 Mark Kastel 36 gas guzzling 36 Randy Thomasson 36 Karlyn Bowman 36 Matt Nauman 36 Benjamin H. Grumbles 36 Aaron Belkin 36 Mark LaNeve 36 Claes Fornell 36 Brookings Doha 36 Hemispheric Affairs 36 Sunita Narain 36 flex fuel