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September’s ozone hole was the biggest in 20 years. The warning signs appeared months ago

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Earth

September’s ozone hole was the biggest in 20 years. The warning signs appeared months ago

Hannah E. Kessenich, University of Otago; Annika Seppälä, University of Otago, and Dan Smale, Earth Sciences New Zealand…

byHannah E Kessenich

October 5, 2026