And she happened to point out some very current and needed studies on ozone damage to plants. (realclimate.org)
It's easy to find a number of success stories on the power of political decisions as the industry has opposed using economic arguments also changes that have been easy to make (like some required changes for cars) or that did indeed allow for rapid technology development as reduction of sulfur emissions or replacement of ozone damaging chemicals by safer ones. (judithcurry.com)
They used to be chlorofluorocarbons (CFC) that were banned for damaging the ozone layer, and were replaced by HFCs don't cause ozone damage, but are more than a thousand times worse than CO2 as greenhouse gases. (treehugger.com)