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Ozone loss was a thing even before CFCs were widely used
Recent research published in the Proceedings of the National Academy of Sciences suggests that the first signs of ozone depletion appeared as early as 1957 , decades before CFCs became widely used. Th
Recent research published in the Proceedings of the National Academy of Sciences suggests that the first signs of ozone depletion appeared as early as 1957 , decades before CFCs became widely used. Though it took another 30 years for scientists to develop the atmospheric monitoring capabilities that led them to discover the ozone hole, the ozone layer began thinning decades earlier. The researchers determined that the first signal of ozone loss appeared not in the Antarctic, but in the upper stratosphere of the tropics.
Source: Ars Technica | 2026-06-29