Are you aware that the hole in the ozone layer has been restored, exactly because we have dramatically reduced our emissions of CFCs in spray bottles and refrigeration systems? The ozone hole is no issue anymore *because* people in the 80s, 90s and 2000s did things to solve that issue.
It didn't just happen by itself. It was created by humans, and it was solved by removing the human factors that lead to it creation. Had the people in the 80s not started working on it, then we still had major issues with it.
Well, Laurens. Ozone hole was healed. By a coordinated international effort. How nice! Our little green planet is saved! Millions of people spared from skin cancer! Tears fills my eyes. A wave of renewed trust in humanity goodwill thaws my cold heart ... But... But... Lets look at hard data... Hard data honestly presented and plot in scale. Do you trust American NOAA? NOAA is sure serious, right? Let's look up NOAA data on CFC concentrations in atmosphere. They measure it. https://gml.noaa.gov/hats/graphs/graphs.html
So? WHAT? Ozone hole has healed, but atmosphere levels of CFCs have not dropped any significantly yet??? How can that be??
So it really was not that poor little R-12 molecules? Still a lot of R-12 around, but atmosphere now thrives? Ozone hole does not actually depend on CFC levels, but on something else or what happens? Natural oscillations? Solar activity? Some unknown cosmic factors?
How interesting, right? But refrigerant makers already made billions on replacements. May be trillions. Out of our pockets... Many good old working equipment was trashed. There was once a nice R-113 liquid, a good electrical insulator. A major enemy of our little planet. Was used in Tektronix high-voltage probes, nice and precise. Now useless because the lack of replacement.
Still trust in 'science' ?