This chapter discusses the relationship between nuclear literature and criticism on the one hand and climate fiction and criticism on the other. It demonstrates, first, a long-standing preoccupation in nuclear texts with weather and climate, suggesting that nuclear literature might usefully be considered a special subcategory of climate fiction. It then deals with a thriving - and relatively new - tradition of nuclear criticism and theory. It shows how, by opening up three key problematics (nuclear geographies, nuclear temporalities, and nuclear subjectivities), nuclear criticism brings into focus the interdependence of global and local, the significance of deep time, and how humans are produced by their interactions with technology and nature. This critical tradition can feed usefully into an understanding of climate fiction.