https://www.americanthinker.com/blog/2019/10/ozone_hole_shrinking_nasa_announces.html
NASA recently announced that evidence indicates that the planet’s ozone hole over Antarctica is closing and now the smallest it’s been since it was discovered three decades ago. By 1990, the ozone hole had enlarged to 8 million square miles (twice the size of the USA). The cause of this opening has been blamed on chlorofluorocarbons, which most countries outlawed. The shrinking hole should be significantly reduced and stable by 2040–50 and eliminated by 2100.
Sounds as though the climate change (or global warming) enthusiasts have to adjust their strategy for arousing fear among the industrialized nations regarding potential planetary damage from human behavior. It now appears that the polar bear population is stable. Climate change advocates now must deal with this good news, which messes up some of the scare tactics they have employed for several decades.
However, this good news was delivered with a negative caveat. For three decades, we have been told that the ozone hole was a threat to the planet and life, as it allows more solar radiation (UV) through to the Earth’s ground. This will increase the risk of DNA mutations, they argue. Ozone is a multiple oxygen molecule that also is a greenhouse gas. Therefore, it can raise the heat retained in the atmosphere. The hole allows some heat to escape and helps cool the planet. Though these amounts are small, they work against global warming.