I remember when this was a big deal back in the 90’s
Then all the doom and gloom that was predicted by “scientist” never happened
And talk just went away
hmmm
It went away because the banned aerosols hairspray and certain refrigerant. /s
The doom and gloom didn’t happen, because we stopped producing and releasing CFC’s into the atmosphere... Some still are being produced in third world countries, but global levels nowhere near the levels they were decades ago.
CFC’s were believed to not be able to be broken down by natural processes... but in the 70s they discovered that ultraviolet light in the stratosphere did indeed break them down, releasing their chlorine atoms, which, would then steal an O atom from O3 (ozone) creating aa CO molecule, and a standard O2 Molecule... Then when that CO molecule finds another stray O atom, the O atom takes the O atom from the CO molecule , creating a C atom and an O2 Molecule, and the C atom swipes another O atom from an O3 .. and the cycle repeats.
This isn’t conjecture, or even a hypothesis, this is proven, and basic chemistry. Reducing the release of these molecules into the atmosphere was a very very good thing.