•
Artificial worlds •
Alien Zoo—a zoo where humans are kept as exhibits •
Arcologies—enormous habitats (hyperstructures) of extremely high human population density •
Cyberspace—the new, virtual territory of societal interaction •
Domed city •
Floating city •
Future of the Earth •
Climate change—science fiction dealing with effects of anthropogenic
climate change and
global warming at the end of the
Holocene era •
Megacity •
Pastoral science fiction—science fiction set in rural, bucolic, or agrarian worlds, either on Earth or on Earth-like planets, in which advanced technologies are downplayed. •
Seasteading and
ocean colonization •
Pirate utopia •
Reality Television •
Space colonization •
Colonization of the Moon •
Ecumenopolis •
Pantropy •
Other planets •
Desert planet •
Mars •
Terraformed planets •
Space stations and habitats •
Underground city ==Political themes==