At this point, the only thing that can save us is science-fiction levels of global mobilization to fundamentally restructure civilization. Even if that could happen, it'd just end up making the rich even richer. The only times we've come close to that level of societal focus and unity have been in the name of killing.
I've got no hope for the future. Climate change is going to ruin us completely, all we can do now is try to enjoy the last days of this era.
(To be clear, there are things we can and should do as individuals to try and avoid the worst of climate change, not the least of which is rallying for legislative action. I just think we're past preventing widespread decay and suffering. The best we can accomplish is mitigation.)