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Doomsday scenarios are possible events that could cause human extinction or the destruction of all or most life on Earth (a "true" or "major" Armageddon scenario), or alternatively a "lesser" Armageddon scenario in which the cultural, technological, environmental or social world is so greatly altered it could be considered like a different world.
This scenario is unlikely in the foreseeable future. [137] Astroengineering projects proposed to mitigate the risk of gamma-ray bursts include shielding the Earth with ionised smartdust and star lifting of nearby high mass stars likely to explode in a supernova. [142]
A global catastrophic risk or a doomsday scenario is a hypothetical event that could damage human well-being on a global scale, [2] even endangering or destroying modern civilization. [3] An event that could cause human extinction or permanently and drastically curtail humanity's existence or potential is known as an " existential risk ".
Belief in the apocalypse is most prevalent in people with lower levels of education, lower household incomes, and those under the age of 35. [9] [10] In the United Kingdom in 2015, 23% of the general public believed the apocalypse was likely to occur in their lifetime, compared to 10% of experts from the Global Challenges Foundation.
By the year 2100, the median population projection is at 11 billion people, while the maximum population projection is close to 16 billion people. The lowest projection for 2100 is around 7 billion, and this decline from present levels is primarily attributed to "rapid development and investment in education", with those projections associated ...
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An impact event is commonly seen as a scenario that would bring about the end of civilization. In 2000, Discover magazine published a list of 20 possible sudden doomsday scenarios with an impact event listed as the most likely to occur.
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), for example by sub-replacement fertility.