Perhaps the most high-profile cli-fi author is Margaret Atwood, whose 2009 The Year of the Flood features survivors of a biological catastrophe also central to her 2003 novel Oryx and Crake, a book Atwood sometimes preferred to call "speculative fiction".
Source: wiktionary
The issue is so pressing that some have started to use the term “cli-fi” for climate fiction — but this faddish coinage obscures a longer history of sf’s engagement with the environment and leaves unexamined the question of why sf has proven such a valuable genre for thinking about environmental futures.
Source: wiktionary