WikipediaThe Montreal Protocol on Substances that Deplete the Ozone Layer, also known simply as the Montreal Protocol, is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. Signed 26 August 1987, it was made pursuant to the 1985 Vienna Convention for the Protection of the Ozone Layer, which established the framework for international cooperation in addressing ozone depletion. The Montreal Protocol entered into force on 26 August 1989, and has since undergone nine revisions, in 1990 (London), 1991 (Nairobi), 1992 (Copenhagen), 1993 (Bangkok), 1995 (Vienna), 1997 (Montreal), 1998 (Australia), 1999 (Beijing) and 2016 (Kigali).As a result of the international agreement, the ozone hole in Antarctica is slowly recovering. Climate projections indicate that the ozone layer will return to 1980 levels between 2050 and 2070. The Montreal Protocol's success is attributed to its effective burden sharing and solution proposals, which helped mitigate regional conflicts of interest, compared to the shortcomings of the global regulatory approach of the...
https://en.wikipedia.org/wiki/Montreal_Protocol[https://en.m.wikipedia.org/wiki/Montreal_Protocol]