"Secretary of State Hillary Rodham Clinton Thursday announced a new global initiative to reduce short-lived climate pollutants. Working together as the Climate and Clean Air Coalition, Bangladesh, Canada, Ghana, Mexico, Sweden, and the United States will conduct what Secretary Clinton described as 'a targeted, practical, and highly energetic global campaign to spread solutions to the short-lived pollutants worldwide.' The initiative targets three pollutants that together account for more than one-third of current global warming - black carbon, or soot; methane; and hydrofluorocarbons, which are gases used in air conditioning, refrigeration, solvents, foam blowing agents and aerosols."