Related by context. Frequent words. (Click for all words.) 47 Pielke 46 Patzek 46 preindustrial levels 46 Peter Gleick 45 Worldwatch 45 Roger Pielke Jr. 44 Crutzen 44 Daniel Sperling 43 Worldwatch Institute 43 Mitloehner 42 GELLERMAN 42 Joseph Romm 42 global warming 41 USGS scientist 41 NRDC 41 Jeremy Rifkin 41 Amstrup 41 Rignot 41 Frances Beinecke 41 Ken Caldeira 41 James Inhofe R-Okla. 40 Tittel 40 Bjorn Lomborg 40 Vickie Patton 40 carbon sequestration 40 Environmental Integrity 40 Nordhaus 40 Kassie Siegel 40 species extinctions 40 glacial melt 40 emitting greenhouse gases 39 anthropogenic climate 39 Steven Milloy 39 Revkin 39 CURWOOD 39 ocean acidity 39 Monbiot 39 climate change 39 Lindzen 39 forest ecologist 39 Minister Sigmar Gabriel 38 Zoback 38 Elizabeth Kolbert 38 Algore 38 Lomborg 38 Kyoto Protocols 38 Natural Resources Defense 38 Delaware Riverkeeper Network 38 Research Institute IFPRI 38 geoengineering 38 Sierra Club 38 Pachauri 38 James Lovelock 38 corn ethanol 38 George Monbiot 37 NASA Goddard Institute 37 atmospheric chemist 37 Inhofe 37 Copenhagen Consensus 37 Sunita Narain 37 nutrient runoff 37 Jason Grumet 37 Waxman Markey climate 37 Bruce Nilles 37 Jeff Tittel 37 Concerned Scientists 37 Waxman Markey bill 37 Joel Makower 37 habitat fragmentation 36 Vandana Shiva 36 Daniel Yergin chairman 36 greenhouse gases 36 greenhouse gasses 36 global warming alarmism 36 Amazon deforestation 36 greenhouse gas emission reductions 36 reduce greenhouse gas 36 climate alarmists 36 river deltas 36 Concerned Scientists UCS 36 GLOBAL WARMING 36 soil erosion 36 Philip Clapp 36 Roland Hwang 36 Marion Nestle 36 levee breaches 36 Pembina Institute 36 retreating glaciers 36 PennEnvironment 35 Milkey 35 Carbon sequestration 35 environmental degradation 35 Roger Bate 35 Tamminen 35 IFPRI 35 Happer 35 American Farmland Trust 35 manmade global warming 35 worsening droughts 35 enviros 35 greenhouse emission