- The largest-ever Arctic ozone hole developed this spring. Now, scientists say it's closed. https://edition.cnn.com/2020/04/27/world/ozone-hole-arctic-scn-trnd/index.html 5 comments science
- Scientists report the largest-ever Arctic ozone hole developed this spring has closed https://www.cnn.com/2020/04/27/world/ozone-hole-arctic-scn-trnd/index.html 10 comments worldnews
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