Yes. At least we know how to build the infrastructure. It can be done very quickly if we so choose & fund. And again, yes, fusion could conceivably help us reve

Yes. At least we know how to build the infrastructure. It can be done very quickly if we so choose & fund. And again, yes, fusion could conceivably help us reverse some of the damage caused in the meantime. Re fusion power, the causality is the reverse of how it's normally expressed. We don't need fusion to fix the climate crisis (it comes too late). But we do need to fix the climate crisis to be able to create usable fusion power. The scale of research & implementation it relies on depends on a well-functioning global network of nations. If we collapse into multiple wars over who will take the hundreds of millions of mid-century refugees, who will and won't quit fossil fuels, not to mention the trivialities of Great Power politicking, then fusion power just won't happen.