At Paris climate talks, experts cite looming risk from industrial coolants, methane

A coalition of governments and private businesses has agreed to take up a series of initiatives to limit so-called “short-lived climate pollutants,” ranging from industrial chemicals used in refrigerators to soot particles given off by diesel engines. While emissions of these pollutants are small compared to carbon dioxide, some are vastly more powerful, pound for pound, in trapping heat in the Earth’s lower atmosphere.