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September's ozone hole was the biggest in 20 years

The area covered by the Antarctic ozone hole peaked at more than 27 million square kilometers (10.4 million square miles) in September, the second-largest area ever observed for this time of year.

September's ozone hole was the biggest in 20 years

We haven't written up this one. Phys.org has the full story — the link below goes straight to it.

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