Ozone layer: how the hole was plugged

In rare good news for the environment, a UN report confirmed Monday that the hole in the ozone layer that had been threatening Earth since the 1980s is shrinking.

Ozone hole grows this year, but still shrinking in general

The Antarctic ozone hole last week peaked at a moderately large size for the third straight year—bigger than the size of North America—but experts say it's still generally shrinking despite recent blips because of high ...

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