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Nuclear war is an often-predicted cause of the extinction of humankind. [1]Human extinction or omnicide is the hypothetical end of the human species, either by population decline due to extraneous natural causes, such as an asteroid impact or large-scale volcanism, or via anthropogenic destruction (self-extinction).
An uncertain factor is the influence of human technology such as climate engineering, [2] which could cause significant changes to the planet. [3] [4] For example, the current Holocene extinction [5] is being caused by technology, [6] and the effects may last for up to five million years. [7]
[110] [111] [112] A 1997 assessment states that over a third of Earth's land has been modified by humans, that atmospheric carbon dioxide has increased around 30 percent, that humans are the dominant source of nitrogen fixation, that humans control most of the Earth's accessible surface fresh water, and that species extinction rates may be over ...
After the sun celebrates its 11 billionth birthday, scientists believe it will continue to expand to the point where it is 166 times bigger than it is now.
Humans will soon go extinct unless we can find 5 more earths. We’re basically in the days of the dinosaurs, according to Stanford scientists.
The Voluntary Human Extinction Movement (VHEMT [A]) is an environmental movement that calls for all people to abstain from reproduction in order to cause the gradual voluntary extinction of humankind. VHEMT supports human extinction primarily because it would prevent environmental degradation.
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[2] [4] [27] [28] Nat Schachner's 1934 short story "When the Sun Dies" describes the entire Earth freezing over in the 1980s as a result of a reduction in solar activity, [2] [6] [29] and in Arthur C. Clarke's 1949 short story "History Lesson", future Venusians find humanity extinct due to the environmental changes brought about by the Sun fading.