The Earth's protective ozone layer is healing, with the ozone hole in 2024 smaller than in recent years, according to a report by a UN meteorological agency.

• The World Meteorological Organization's Ozone Bulletin reported a long-term positive trend due to international action.
• The report was issued on World Ozone Day, marking the 40th anniversary of the Vienna Convention.
• The Montreal Protocol has led to the phase-out of over 99 percent of ozone-depleting substances, with the ozone layer on track to recover to 1980s levels by the middle of this century.