By Matthew Taylor
Efforts to reduce levels of one potent greenhouse gas appear to be failing, according to a study.
Scientists had expected to find a dramatic reduction in levels of the hydrofluorocarbon HFC-23 in the atmosphere after India and China, two of the main sources, reported in 2017 that they had almost completely eliminated emissions.
But a paper published in the journal Nature Communications says that by 2018 concentrations of the gas – used in fridges, inhalers and air conditioners – had not fallen but were increasing at a record rate.
Matt Rigby, from Bristol University, who co-authored the study and is a member of the Advanced Global Atmospheric Gases Experiment, said academics had hoped to see a big reduction following the reports from India and China.
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