Andrew Eli, coordinator of climate change assistance programs in the State Department’s Office of Global Change, said January 29 that an international effort to reduce black carbon emissions cannot be successful without the participation of China and India. The voluntary Climate and Clean Air Coalition to Reduce Short-Lived Climate Pollutants was launched by the United States and five other countries last February; the coalition is implementing initiatives to reduce black carbon emissions from diesel vehicles and reduce CH4 emissions from oil and natural gas productions.