The Montreal Protocol has successfully guided the world’s transition from chlorofluorcarbons that deplete ozone to hydrofluorocarbons that pose no direct threat to the ozone layer. A study suggests that a recent rise in atmospheric chlorofluorcarbons is linked to the inadvertent release of these gases during the production of hydrofluorocarbons.
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Salawitch, R.J. A fly in the ozone and climate ointment. Nat. Geosci. 16, 278–279 (2023). https://doi.org/10.1038/s41561-023-01165-8
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DOI: https://doi.org/10.1038/s41561-023-01165-8