This is, perhaps, the biggest achievement in the history of humanity. Within 5-10 years, the problem was identified and all the countries in the world started acting on the solution. And today we can see the result. The ozone hole is getting smaller. According to the United Nations report released in January 2023, over the next 40 years, things will return to normal and the ozone hole will be completely eliminated. They have projected that by the year 2040, the ozone layer will return to the level in 1980.
By the year 2045, the ozone hole above the Arctic will completely disappear. That means our ozone layer will recover completely. And above Antarctica, our ozone layer will recover completely by the year 2066.
Two years ago, another study found that by banning CFCs, we have also controlled some significant effects of climate change. If CFCs were still used, then the global temperature would have increased by an additional 2.5° Celsius by 1999. In 2016, Hydrofluorocarbons, or HFCs, were added to the list of controlled substances. Over the next 30 years, governments will try to phase out HFCs too.
