Related by context. Frequent words. (Click for all words.) 44 megatonnes 44 CO2 43 Carbon Dioxide 43 atmospheric CO2 42 carbon emissions 42 gigatons 42 climate change 41 GHGs 41 carbon dioxide emissions 41 CO2 emissions 41 Gt 41 fossil fuel 41 greenhouse gases 40 carbon dioxide 40 carbon dioxide emission 40 carbon emission 40 greenhouse gasses 40 IPCC 39 burning fossil fuels 39 methane 39 tropical forests 38 Carbon dioxide emissions 38 carbon 38 carbon sinks 38 fossil fuels 38 Climate Change 38 carbon dioxide CO2 38 greenhouse gas emissions 38 greenhouse gas concentrations 38 greenhouse gas 38 atmospheric carbon dioxide 38 UNFCCC 38 GHG emissions 38 Climate Change IPCC 38 carbon dioxide emitted 38 Monbiot 38 CO2 emission 37 global warming 37 emissions 37 biosphere 37 reducing carbon emissions 37 carbon emitting 37 GHG 37 greenhouse emissions 37 KWh 37 peatland 36 peatlands 36 biodiversity 36 emission reductions 36 C# emissions 36 soot 36 Fossil fuels 36 Garnaut 36 carbon dioxide CO2 emissions 36 Greenhouse gases 36 greenhouse gas GHG emissions 36 reduce carbon emissions 36 Lomborg 35 heat trapping greenhouse gases 35 Climate 35 carbon sequestration 35 Global Warming 35 Greenhouse Gas 35 harmful gases 35 biochar 35 glaciers 35 albedo 34 carbon emitters 34 landfilled 34 greenhouse gases emitted 34 coal 34 calculated 34 geoengineering 34 #ppm [001] 34 Pachauri 34 notional 34 ecological footprint 34 reducing CO2 emissions 34 particulate emissions 33 SO2 33 carbon capture 33 emission reduction 33 Professor Garnaut 33 Himalayan glaciers 33 Climate Change UNFCCC 33 #g/km [001] 33 ozone layer 33 emission 33 greenhouse gas emission 33 carbon credits 33 climatological 33 pollutant 33 Met Office 33 Tibetan Plateau 33 pollutant emissions 33 achievable 32 polar regions 32 boreal forest 32 Climategate 32 Copenhagen Climate 32 Greenland ice