There is a cool new subgenre in recent years called Solarpunk, which focuses on optimistic world-building. Some of it can come across as rather preachy regardin

There is a cool new subgenre in recent years called Solarpunk, which focuses on optimistic world-building. Some of it can come across as rather preachy regarding climate change, but there is some decent reading in there. My favourite so far is Another Life by Sarena Ulibarri.