Doomer

Doomer and, by extension, doomerism, are terms which arose primarily on the Internet to describe 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. Some doomers assert that there is a possibility these problems will bring about human extinction.

Malthusians like Paul R. Ehrlich, Guy McPherson and Michael Ruppert have related doomerism to Malthusianism, an economic philosophy holding that human resource use will eventually exceed resource availability, leading to societal collapse, social unrest or population decline.