"Six countries—America, Canada, Mexico, Sweden, Ghana and Bangladesh—have agreed to a five-year programme to cut their emissions of "short-term climate forcings", a suite of pollutants that linger less long in the atmosphere than carbon dioxide, but which nonetheless have a profound affect on the amount of solar energy it absorbs. These pollutants (soot, methane and hydrofluorocarbons, or HFCs) are believed to contribute about a third of the human-caused rise in global temperatures." (Quoted from article)