The process that allowed us to came together as a global society to address the depletion of earth's ozone layer is one of the great success stories of ecosystem management. First scientists provided a clear and unambiguous warning about the threat and what was causing it. Policymakers, governments, and private industry used that information to design practical solutions and to implement them. Governments came together and took collective and decisive action to support those solutions. That culminated 30 years ago in the signing of the Montreal Protocol, which helped us phase out the use of chlorofluorocarbons and hydrochlorofluorocarbons that are the main enemies of stratospheric ozone.
However, check out this BBC story about the rise of other compounds that are beginning to have a detrimental affect http://www.bbc.com/news/science-environment-41585552
One of the main ones is dichloroethane that is used in the manufacture of polyvinyl chloride (PVC). PVC is everywhere. Agriculture, is one example where it is increasingly being used for things like irrigation pipe, green houses, and row covers among other things.
This news story is based on a recent scientific paper. Check out the original source here:
https://www.atmos-chem-phys.net/17/11929/2017/
Also note that there is still scientific controversy about this. Unlike the case when the Montreal Protocol was signed
