Global Cooperation Leads to Ozone Healing
Antarctic ozone hole was smaller than previous years.
International efforts since 1975 Vienna Convention and 1987 Montreal Protocol reduced ozone-depleting substances.
2024 Antarctic ozone deficit was 46.1 million tonnes less than 1990–2020 average.
UN Secretary-General Antonio Guterres called ozone layer 'healing'.
WMO Secretary-General Celeste Saulo called the recovery 'no coincidence'.
Ozone layer expected to recover to 1980 levels by 2066 over Antarctica.