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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 ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 1 March 2025. This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources. The Last Judgment by painter Hans Memling. In Christian belief, the Last Judgement is an apocalyptic event where God makes a final ...
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 ".
The April 30, 2011 document was written as part of a fictional training scenario for junior officers undergoing training in JOPES, the DoD's contingency planning system and for strategic training. [ 2 ] [ 4 ] [ 1 ] United States Strategic Command instructors found that a "zombie survival plan" made for "a very useful and effective training tool ...
Unknown; may include climate changes, massive volcanic eruptions and Humans (largely by human overhunting) [4] [5] [6] Neogene: Pliocene–Pleistocene boundary extinction: 2 Ma: Possible causes include a supernova [7] [8] or the Eltanin impact [9] [10] Middle Miocene disruption: 14.5 Ma Climate change due to change of ocean circulation patterns.
1 + 29 ⁄ 60 (89 s) 23:58:31 − 1 ⁄ 60 (−1 s) The continuing Russian invasion of Ukraine and the Middle Eastern crisis, increased nuclear proliferation, effects of climate change, biological threats, and advancing technologies. This is the closest to midnight the Clock has been since its inception.
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 .