Related by context. Frequent words. (Click for all words.) 49 global warming 49 carbon sequestration 47 carbon capture 47 climate change 44 greenhouse gases 44 climatologists 44 Climate Change IPCC 44 IPCC 43 synthetic biology 43 ocean acidification 42 AGW 42 Global Warming 42 scientific 41 biofuels 41 emission reductions 40 homeopathy 40 CO2 40 precautionary principle 40 greenhouse gas 40 nanotechnology 40 coal gasification 40 corn ethanol 40 atmospheric carbon dioxide 39 Climate Change 39 carbon dioxide 39 cloud seeding 39 alternative energies 39 carbon dioxide emissions 39 fossil fuel 39 Climate 39 carbon dioxide CO2 39 emissions 39 renewables 39 greenhouse gasses 39 Global warming 38 climatology 38 Concerned Scientists 38 carbon emissions 38 nanotechnologies 37 greenhouse emissions 37 Montreal Protocol 37 greenhouse gas emissions 37 physicists 37 smart grids 37 burning fossil fuels 37 climate 37 Holdren 37 oceans 37 Climategate 37 psychoanalysis 37 fossil fuels 36 mercury emissions 36 anthropogenic 36 biofuel 36 carbon dioxide CO2 emissions 36 antibiotic resistance 36 GHG 36 evolutionary biology 36 Garnaut 36 GHGs 36 heat trapping gases 36 emission reduction 36 IGCC 36 acidification 36 greenhouse gas emission 36 reduce carbon emissions 36 Pembina Institute 36 theoretical 36 Kyoto accord 36 scientists 36 combating global warming 36 HFCs 35 alarmists 35 genetically modified crops 35 tar sands 35 biosphere 35 bioenergy 35 comparative effectiveness 35 environmentalism 35 climatologist 35 Greenland ice 35 reducing carbon emissions 35 carbon 35 peer reviewed 35 smart grid 35 desalination 35 peer reviewed scientific 35 carbon emission 35 creationists 35 REDD 35 sequestration 34 emitters 34 environmentalist 34 renewable energy 34 polar regions 34 Geophysical Research 34 biomass 34 GHG emissions 34 aerosols 34 bottom trawling 34 Pachauri