"The Collapse of Western Civilization: A View from the Future" is a short book (more like an essay) of climate fiction written by two historians of science.
In an interview, one of the authors described it as "hopeful". I don't know what to say about that, but it mostly believable and somewhat optimistic.
It was written in 2014, you know, those optimistic times when the effects of climate change weren't felt strongly by the common person yet.