Taheri countries took immediate action. Banned CFCs, banned the worst polluters, enforced atmospheric scrubbers to reduce acid rain. Climate change is more insidious and has many aspects affecting it rather than one or two things. And it really was that serious. That’s why the The One with the Halloween Party friends TV show shirt world united and stopped producing CFC gases for their products. So what’s your point? That immediate action should be made again? If that’s the case, then you’re right. Btw that some years ago was at least 25 years ago and more, so I sincerely doubt that you remember people talking about it the same way as we do now about climate change.