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Ozone Layer Recovery
September 21 , 2025
14 hrs 0 min
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- The World Meteorological Organization (WMO) reports that the ozone hole in 2024 was smaller than in recent years.
- Global efforts under the Montreal Protocol have phased out over 99% of ozone-depleting substances.
- The ozone layer is projected to return to 1980 levels by 2066 over Antarctica, 2045 over the Arctic, and 2040 worldwide.
- The 2024 Antarctic ozone hole showed a delayed onset and faster healing, indicating early recovery signs.
- The Montreal Protocol and Vienna Convention are credited with this successful global environmental effort.
- Continued monitoring of ozone and replacement chemicals remains essential to ensure sustained recovery.
- The Kigali Amendment to the Montreal Protocol targets the reduction of hydrofluorocarbons to limit global warming by 0.5°C by 2100.
- Ozone layer recovery reduces risks of skin cancer, cataracts, and ecosystem damage from ultraviolet radiation.
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