An international agreement reached in the 1980s led to a phasing out of chemicals that damaged Earth's ozone layer. But the ones used to replace them can break down and turn into a greenhouse gas that lingers for tens of thousands of years -- and make climate change worse. That's according to a new study from reasearchers at Boulder's NOAA Earth System Research Lab and elsewhere. Jim Burkholder is a research chemist at NOAA. He spoke with Ryan Warner about the report.
