Related by context. Frequent words. (Click for all words.) 50 Germanwatch 47 UNFCC 46 greenhouse gases GHG 46 TEEB 46 largest emitter 45 Gland Switzerland 45 Unep 45 HNWI population 45 Knebworth Herts SG3 6RR 45 gigatonnes 44 University UNU 44 greenhouse gases GHGs 44 Rignot 44 World Competitiveness Yearbook 43 preindustrial levels 43 Henry Hou 43 Environment Programme 43 atmospheric concentrations 43 Writer Gillian Wong 43 IWMI 43 UNCCD 43 Germany Ifo institute 43 Climate Impact Assessment 43 gigatons 42 WEO 42 hydrological cycle 42 ozone depletion 42 writer Gillian Wong 42 Combat Desertification 42 Persistent Organic Pollutants 42 Corruption Perception Index 42 atmospheric CO2 41 ozone depleting chemicals 41 UNEP 41 Worldwatch 41 GHG emission 41 Sean Yoong 41 Ozone Layer 41 Economist Intelligence Unit EIU 41 ozone depleting substances 41 Xie Zhenhua 41 Human Settlements Programme 41 Environmental Programme UNEP 41 Global Gender Gap 41 Crutzen 41 Michel Jarraud 41 Global Footprint 41 glacial melting 41 Kennebec Journal Staff 41 By Elias Hazou 41 Yumkella 40 Carbon dioxide emissions 40 ifo 40 Montreal Protocol 40 isoprene 40 World Meteorological Organisation 40 CO2 concentrations 40 ocean acidity 40 terrestrial ecosystems 40 Mitloehner 40 acidifying 40 Environment Programme UNEP 40 By MaltaMedia News 40 atmospheric CO 40 Samuel Petrequin contributed 40 Witoelar 40 Program UNEP 40 Trucost 39 En Lai Yeoh 39 Ozone layer 39 worsening droughts 39 Niniek Karmini contributed 39 Kyoto Protocols 39 heat trapping carbon dioxide 39 Noriko Kitano 39 Salim Yusuf 39 glacial melt 39 CO2 Emissions 39 Tourism Organisation UNWTO 39 Amy Kazmin 39 warming gases 39 Ramola Talwar Badam 39 #.#C [004] 39 OECD 39 Millennium Ecosystem Assessment 39 greenhouse gas emission reductions 39 Nitrogen oxides 39 writer Cristian Salazar 39 greenhouse gas emitter 39 IEA 39 atmospheric methane 39 Organization WTO 39 radiative forcing 39 Braathen 39 Pacific UNESCAP 38 Director Achim Steiner 38 degree Centigrade 38 Ecological Footprint 38 researcher Zhao Liang 38 greenhouse gas concentrations 38 Klaus Toepfer