Related by context. Frequent words. (Click for all words.) 47 Clarence Ditlow executive 47 Sierra Club 46 Carmen Balber 46 Frank Maisano 45 Luke Popovich 44 Jeff Tittel 44 spokesman Kevin Zeese 44 Tyson Slocum 44 Bruce Nilles 43 Andrew Arulanandam 42 Dan Ronayne 42 Wilderness Workshop 42 Gene Karpinski 42 Electric Reliability Coordinating 41 Audra Parker 41 Philip Clapp 40 Eli Pariser executive 40 Roland Hwang 40 Appalachian Voices 40 Erik Milito 40 stewards 40 Environmental Responsibility 40 Fred Wertheimer 40 Jon Coupal 40 Frances Beinecke 40 Jeff Tittel director 40 Vickie Patton 39 Shosteck 39 NRDC 39 Kieran Suckling 39 opensecrets.org 39 Clarence Ditlow 39 Andrew Kimbrell 39 VPIRG 39 Sheila Krumholz 39 Juliet Eilperin 39 Terry Tamminen 39 Patrick Guerriero 38 Consumer Rights FTCR 38 SpeechNow.org 38 Chairwoman Barbara Boxer 38 Steve Kerekes 38 Conservation Voters 38 Thoroughbred Horsemen Association 38 Futurewise 38 Ballot Initiative 38 Tom Buis 38 Kate Bedingfield 37 Brendan Cummings 37 Andrew Wetzler 37 Repower America 37 Joseph Romm 37 PennEnvironment 37 Environmental Responsibility PEER 37 Steven Milloy 37 Geoffrey Lean 37 Competitive Enterprise 37 nonpartisan 37 Daryl Kimball 37 Martosko 37 publishes Consumer Reports 37 Phil Kerpen 37 Luke Esser 37 John Maxse 37 David Kolata 36 Biodiversity Conservation Alliance 36 Jared Blumenfeld 36 Natural Resources Defense 36 PennFuture 36 Environmental Advocacy 36 Neil Carman 36 Gene Kimmelman 36 Wildlife Federation 36 Ethanol Vehicle 36 Kris Hermes 36 Mason Tvert 36 Public Citizen 36 Marcellus Shale Coalition 36 TrackNet 36 Harvey Rosenfield 35 David Bookbinder 35 Pew Environment 35 MASSPIRG 35 David Doniger 35 Verified Voting 35 Concerned Scientists 35 Marc Rotenberg 35 Greenwire 35 Jeff Ruch 35 TRCP 35 tracks 35 National Tax Limitation 35 MoveOn.org Political 35 Clean Air 35 Ron Nehring 35 Auto Reliability 35 Joel Makower 35 Clean Water Action 35 electionline.org 35 Jean Halloran 35 Trails Conservancy