Doomers are people who are extremely pessimistic or fatalistic about global problems such as overpopulation, peak oil, climate change, ecological overshoot, pollution, nuclear weapons, and runaway artificial intelligence.
[5] Canadian self-identified doomer Paul Chefurka hosted a website where he encouraged his readers to eat lower on the food chain, modify their homes for the apocalypse, and to consider not having children.
[7] Kaitlyn Tiffany writes in The Atlantic that the doomer meme depicts young men who "are no longer pursuing friendships or relationships, and get no joy from anything because they know that the world is coming to an end.
"[6] A related meme format, "doomer girl", began appearing on 4chan in January 2020, and it soon moved to other online communities, including Reddit, Twitter, and Tumblr, often by women claiming it from its 4chan origins.
[9] The BBC describes sustainability professor Jem Bendell's self-published paper Deep Adaptation: A Map for Navigating Climate Tragedy as "the closest thing to a manifesto for a generation of self-described 'climate doomers'".
[13] Kate Knibbs, writing in Wired, described the development of a popular and growing strain of "doomer" climate fiction, in contrast to the typically optimistic undertones of the genre.