Related by context. Frequent words. (Click for all words.) 82 CO2 emissions 79 carbon emission 75 carbon dioxide emissions 75 emission 74 carbon emissions 73 emissions 70 greenhouse gas emissions 70 CO2 70 carbon dioxide CO2 emissions 68 greenhouse gas emission 66 GHG emissions 65 greenhouse gas 65 greenhouse emissions 64 Emissions 63 emission reduction 63 reducing CO2 emissions 63 greenhouse gases 62 exhaust emissions 62 GHGs 62 carbon 61 reduce carbon emissions 61 greenhouse gasses 60 emission reductions 60 NOx 59 GHG 59 tailpipe emissions 58 Emission 57 carbon dioxide CO2 57 carbon dioxide 56 pollution 56 reducing carbon emissions 54 global warming gases 53 carbon footprint 53 zero emission 53 nitrogen oxide 53 air pollution 53 carbon footprints 52 nitrogen oxide emissions 49 mercury emissions 49 nitrogen oxides 48 sulfur dioxide emissions 48 g km 48 pollutant 47 emitting 47 carbon credits 47 fossil fuel 46 polluting 46 environmental friendliness 45 carbon offsets 45 global warming 45 emit 45 renewables 45 ecological footprint 45 EU ETS 45 particulate matter 45 carbon neutral 45 emission allowances 44 Carbon 44 environmentally friendly 44 #g/km [002] 44 renewable energies 44 mercury pollution 44 climate change 44 polluter 44 diesel 44 renewable energy 44 emitters 43 C# [001] 43 efficiency 43 pollutants 43 heat trapping gases 43 cleaner fuels 43 fossil fuels 43 VOCs 43 polluters 42 EVs 42 deforestation 42 eco 42 polluting industries 42 diesels 42 Air Pollution 41 Energy Efficiency 41 gas guzzler 41 carbon neutrality 41 biofuel 41 environmental 41 sulfur dioxide 41 Low Carbon 41 Pollution 41 bio fuels 41 CERs 40 mpg 40 burning fossil fuels 40 ozone 40 EV 40 environmental impacts 40 bioethanol 40 emitted 40 atmospheric carbon dioxide 40 SMMT 40 particulates