| http://www.w3.org/ns/prov#value | - These pollutants include factory-made hydrofluorocarbons (HFCs), used as refrigerants and to make insulating foams, methane that leaks from landfills and oil and gas production, including fracking, and black carbon soot from dirty diesels, brick kilns, coke ovens, and wood and dung cooking fires still used by nearly half of the world.
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