Are you serious? It "just went away?" CFCs were identified as the driving force, and the Montreal Protocol was ratified by nearly all nations in 1987, banning n

Are you serious? It "just went away?" CFCs were identified as the driving force, and the Montreal Protocol was ratified by nearly all nations in 1987, banning nearly all uses of CFC. And nations actually put it into effect; it wasn't just a paper agreement. It took decades but natural processes went back closer to its old equilibrium.