this post was submitted on 16 Jan 2025
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CFC’s are great at coolimg things as long as you do not care about having an ozone layer.
They're even fine if you care about the ozone layer so long as you never ever let any leak. Until the coolant leaks the CFCs are cycling in a closed system in which they can't do any damage. The problem is that "not letting any leak" is harder than it sounds, and the newer coolants just don't do the job as well.
It's like how asbestos tiles are fine until they get damaged, and then they fuck the lungs of anyone unfortunate enough to breathe in a tiny bit of it.
I thought that was over
The ozone hole is mostly repaired, because we stopped using CFC's.
I think it's more accurate to say the problem is mostly solved and its on track to being repaired rather than mostly repaired.
Antarctic ozone hole:
2000: 28.3 million sq km (largest recorded).
2020: 24 million sq km.
2024: 20 million sq km (approx 3x size of usa).
Global ozone levels will return to 1980 levels around 2040.
Arctic ozone will recover by 2045 (currently around 1 million sq km).
Antarctic ozone hole will fully recover by 2066.
Yup much like with acid rain Reagan and George HW Bush stepped up environmental regulations to confront the problem.
As most of the problem was due to America’s use of CFC’s it was their issue to solve.