Climate fiction (or cli-fi) is a still-emerging but broad and diverse category of fiction that addresses the challenges of climate change and its impacts on human and nonhuman life, in the present and in the future, on Earth and in more fantastical settings. This chapter offers an inclusive definition of this increasingly urgent genre, aiming to capture what's currently being published and to suggest other possibilities available to future cli-fi writers. Additionally, it sets out to expand the history of the genre, drawing on the work of Adam Trexler and Adeline Johns-Putra before offering a taxonomy of cli-fi's various contemporary forms, with examples from literary fiction, hard and soft sci-fi, eco-fabulism, afrofuturism, solarpunk, indigenous futurism, uncivilized writing, and other related subgenres