Related by context. Frequent words. (Click for all words.) 72 Climate Change 70 climate change 63 Global warming 63 global warming 62 climate 62 Global Warming 56 Climate Action 51 Climate Change IPCC 51 Environmental 50 Biodiversity 50 Warming 49 carbon emissions 49 Sustainability 49 greenhouse gases 48 Clean Energy 48 greenhouse gas 48 Biofuel 48 Deforestation 48 Emissions 47 greenhouse gas emissions 47 Carbon 47 carbon emission 46 Pollution 46 Ecological 45 climatic 45 Eco 45 CO2 45 greenhouse gasses 45 IPCC 45 GHG 44 greenhouse emissions 44 Environment 44 Sustainable Development 44 Sustainable 44 carbon dioxide emissions 44 Weather 43 Biofuels 43 Renewable Energy 43 Environment Programme 43 melting glaciers 42 Climate Protection 42 environmental 42 greenhouse gas emission 42 Bioenergy 42 CO2 emissions 41 emissions 41 Copenhagen 41 climatologist 41 COP# [001] 41 Ecology 41 climatologists 41 reducing carbon emissions 41 carbon sequestration 41 Enviro 41 deforestation 41 Drought 40 Globalisation 40 carbon 40 Low Carbon 40 biodiversity 40 CRU 40 Global 40 emission reduction 40 Greenpeace 40 reduce carbon emissions 40 Arctic 40 Environment Programme UNEP 40 REDD 39 Nuclear 39 atmospheric carbon dioxide 39 Climate Change UNFCCC 39 Globalization 39 Renewables 39 Poverty 39 GHG emissions 39 Pachauri 39 Methane 39 desertification 39 Energy Efficiency 39 geoengineering 39 carbon offsets 39 ocean acidification 39 tropical forests 39 Conservation 39 melting ice 38 Renewable energy 38 carbon dioxide 38 UNEP 38 Governance 38 WWF 38 Renewable 38 World Meteorological Organization 38 Greenland ice 38 environmentalism 38 Biomass 38 biofuels 38 ETS 38 marine ecosystems 38 ecosystems 37 Forests 37 eco