I'm not optimistic honestly. We have politicians throughout the world whose political platform revolves around denying that the global warming(climate change) even exists. With this level of irrationality it's hard to see the world collaborating towards a solution for something that in the best scenario is going to change the world as we know it and in the worst scenario represents an existential threat.

We thought that with the internet and the acessibility of scientific content we would have a global society of conscious people with a high degree of scientific literacy and instead of that what we got is the ressurgence of the flat earth theory, fakenews about vaccination and a growing general hostility to science.

I think at some point in the future we will get "used" to progressively catastrophic climatic events, and the people who created this state of things will either be dead or will just adapt their discourse as "it's sad but it was a necessary step to avoid a global green dictatorship".