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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.
The worst-affected city would likely be Billings, Montana, population 109,000, which the model predicted would be covered with ash estimated as 1.03 to 1.8 meters thick. [ 184 ] The main long-term effect is through global climate change, which reduces the temperature globally by about 5–15 °C for a decade, together with the direct effects of ...
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 .
National Response Scenario Number One is the United States federal government's planned response to a small scale nuclear attack. [1] It is one of the National Response Scenarios developed by the United States Department of Homeland Security , considered the most likely of fifteen emergency scenarios to impact the United States .
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 ".
Gray goo (also spelled as grey goo) is a hypothetical global catastrophic scenario involving molecular nanotechnology in which out-of-control self-replicating machines consume all biomass (and perhaps also everything else) on Earth while building many more of themselves, [1] [2] a scenario that has been called ecophagy (the literal consumption of the ecosystem). [3]
In May 2008, a rewritten selection of 50 end-of-world scenarios was published as a book by AW Bruna in the Netherlands: Exit Mundi, het einde van de wereld. De beste 50 scenario's . The book takes the formula of the website to the extremes: the scenarios are more carefully researched, and written with even more puns than the website.
Assume, for simplicity, that the total number of humans who will ever be born is 60 billion (N 1), or 6,000 billion (N 2). [6]If there is no prior knowledge of the position that a currently living individual, X, has in the history of humanity, one may instead compute how many humans were born before X, and arrive at say 59,854,795,447, which would necessarily place X among the first 60 billion ...