Has the ozone layer started healing?

Yes, the ozone layer has shown significant signs of healing since the implementation of the Montreal Protocol. Studies by NASA and the United Nations Environment Programme (UNEP) reveal that the ozone hole over Antarctica has been shrinking and is expected to return to 1980 levels by 2050–2066 if current measures continue. This recovery is one of the greatest environmental success stories of international cooperation. However, challenges remain, such as illegal use of banned chemicals in some regions and the growing demand for alternative coolants. The healing process proves that when nations work together, environmental restoration is possible.