Big win for Earth’s climate: 170 nations agree to reduce use of planet-warming HFCs
Negotiators representing most of the world’s nations have agreed to a new legally binding accord that would significantly cut down on use of hydrofluorocarbons, a chemical coolant used in air conditioners and refrigerators. HFCs are a highly potent heat-trapping gas, considered to be a thousand times as potent as carbon dioxide. The new accord is an extension of the landmark Montreal Protocol negotiated in the 1980s, which phased out ozone-depleting CFCs (chlorofluorocarbons).