Aims to slow down global temperature rise by 0.5°C. The United States will lead a global campaign to reduce short-lived pollutants that aggravate global warming. In an announcement made on February 16, secretary of state Hillary Clinton announced the formation of a new coalition called Climate and Clean Air Coalition that will target non-Co2 pollutants, including methane, hydrofluorocarbons and black carbon. She made the announcement in the presence of ministers from four member countries of the coalition. Reduction of these pollutants, according to Clinton, could prevent temperature rise by about half a degree Celsius.

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