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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 ".
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.
Small near-Earth asteroids are regularly observed and can impact anywhere on the Earth injuring local populations. [124] As of 2013, Spaceguard estimates it has identified 95% of all NEOs over 1 km in size. [125] None of the large "dinosaur-killer" asteroids known to Spaceguard pose a near-term threat of collision with Earth. [126]
The Doomsday Clock is set every year by the experts on the Bulletin’s Science and Security Board in consultation with its Board of Sponsors, which currently includes nine Nobel laureates.
A 16-year-old boy who was believed to have been taken from Arizona by his doomsday-believing mother has been found safe.. Gilbert Police officials wrote in a post on X (formerly Twitter) that ...
The group declared that the Doomsday Clock stood at 100 seconds to midnight — the closest the world has ever been to catastrophe since the clock was created in 1947. Nuclear threats and what ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 January 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 ...
Many hypothetical doomsday devices are based on salted hydrogen bombs creating large amounts of nuclear fallout.. A doomsday device is a hypothetical construction — usually a weapon or weapons system — which could destroy all life on a planet, particularly Earth, or destroy the planet itself, bringing "doomsday", a term used for the end of planet Earth.