Related by context. Frequent words. (Click for all words.) 82 carbon emissions 79 carbon dioxide emissions 77 greenhouse gas emissions 76 CO2 emissions 76 greenhouse emissions 75 reduce greenhouse gas 71 emissions 69 GHG emissions 69 greenhouse gases 68 emission reduction 66 carbon footprint 65 greenhouse gas 61 reducing greenhouse gas 60 renewable energy 60 carbon neutral 60 CO2 59 carbon dioxide 58 renewables 57 environmentally friendly 57 carbon 57 climate change 57 Emissions 56 emission 56 greener 55 renewable 55 fossil fuels 54 alternative fuels 54 global warming 53 mercury emissions 53 fossil fuel 52 biofuels 52 carbon capture 51 environmentally sustainable 51 pollution 50 zero emission 49 environmentally responsible 49 biofuel 49 renewable energies 49 eco friendly 49 renewable fuels 48 environmentally conscious 48 environmentally sound 48 greenest 48 Climate Change 48 Energy Efficiency 48 environmental sustainability 47 air pollution 47 Climate Action 46 recycle 46 biomass 46 smart grid 45 burning fossil fuels 45 Sustainability 45 greening 45 cleaner burning 45 sustainable 45 carbon credits 45 polluting 45 Kyoto Protocol 44 Clean Energy 44 sustainably 44 sustainability 44 emitters 43 efficiency 43 coal fired 43 energy 43 reduce 42 polluters 42 hydrogen fuel 42 Earth Hour 42 offshore wind 42 recycling 41 pollutants 41 gigawatts 41 Sustainable 41 bioenergy 41 biodiesel 41 EVs 40 conserve 40 environmentally 40 sulfur dioxide 40 bio diesel 40 retrofit 40 environmental stewardship 40 Climate 40 Smart Grid 40 hybrid electric 40 retrofitting 40 Renewable Energy 40 environmental impacts 40 Renewable 40 cleaner 39 conservation 39 solar panels 39 Kyoto 39 kilowatt hours 39 Clean Air 39 carpooling 39 Greener 39 solar PV 39 recycled