"emissions" - key terms from Wikipedia

automobile emissions
automobile emissions	control
cadmium emissions
carbon dioxide emissions
carbon dioxide emissions	per capita
carbon emissions
countries by carbon dioxide emissions
dioxide emissions
dioxin emissions
emissions
emissions	control
emissions	credits
emissions	fell
emissions	from deforestation and forest
emissions	of greenhouse gases
emissions	of sulfur
emissions	per
emissions	permits
emissions	reduction
emissions	reductions
emissions	regulations
emissions	scenarios
emissions	standards
emissions	targets
emissions	trading
emissions	trading scheme
engine emissions
federal emissions
ghg emissions
greenhouse emissions
greenhouse gas emissions
greenhouse gas emissions	trading
ii emissions
local emissions
mercury emissions
methane emissions
negative emissions
nocturnal emissions
particulate emissions
per capita emissions
radio emissions
reduce emissions
reducing emissions
reducing greenhouse gas emissions
special report on emissions	scenarios
tritium emissions
verified emissions
zero emissions