# Doomsday Clock The Doomsday Clock is the symbolic-political-cultural representation maintained by the *Bulletin of the Atomic Scientists* (substantial-founded 1945 by Manhattan-Project-and-adjacent atomic-scientist-foundational-figures) since substantial 1947 substantially-measuring substantial-global-catastrophic-risk environment. The substantial-clock substantially-organizes around substantial-midnight-as-substantial-global-catastrophe substantial-symbolic-temporal-framework substantially-articulating substantial-minutes-and-seconds-to-midnight substantial-temporal-distance-measurement. The substantial-clock substantially-updated annually by substantial Bulletin substantial-Science-and-Security-Board substantial-deliberation-and-substantial-publication environment. **Substantial-historical-temporal-trajectory.** Substantial 1947 substantial-initial-7-minutes-to-midnight substantial-temporal-position; substantial 1953 substantial-2-minutes-to-midnight substantial-temporal-position (substantial Cold-War-era thermonuclear-weapon-substantial-development environment); substantial post-Cold-War substantial 17-minutes-to-midnight substantial-temporal-position (substantial 1991); substantial post-2020 substantial 100-seconds-to-midnight substantial-temporal-position (substantial 2020); substantial 2023+ substantial 90-seconds-to-midnight substantial-temporal-position (substantial 2023, 2024); substantial 2025 substantial 89-seconds-to-midnight substantial-temporal-position. The substantial post-2020 temporal-position substantially-organizes around substantial-multiple substantively-distinct global-catastrophic-risk-environment factors including substantial nuclear-weapon-substantial-risk-environment, substantial climate-change substantial-risk-environment, substantial-AI-and-emerging-technology substantial-risk-environment, substantial-biological-and-pandemic substantial-risk-environment. The framework matters for the KB substantially across multiple registers: 1. **Contemporary global-catastrophic-risk-measurement documentary anchor.** The Doomsday Clock is one of the principal contemporary global-catastrophic-risk-measurement frameworks. 2. **Substantial nuclear-weapon-substantial-risk-and-climate-change-substantial-risk-environment integration documentary case.** Substantial post-2007 Doomsday Clock substantially-incorporated climate-change substantial-risk-environment into substantial-deliberation-and-substantial-temporal-position-measurement framework. Tracking the framework is useful for engaging with broader contemporary American global-catastrophic-risk-environment analytical-literature. 3. **Contemporary American [[Climate Change Denialism]] political-rhetorical-environment contestation documentary case.** Substantial contemporary American Climate Change Denialism political-rhetorical-environment substantially-contests substantial-Doomsday-Clock substantial-climate-change-risk substantial-incorporation environment. ## Why It Matters for the KB The Doomsday Clock provides substantial-temporal-symbolic-measurement framework substantially-incorporating substantial-multiple substantively-distinct contemporary global-catastrophic-risk-environment factors. Tracking the framework is useful for engaging with broader contemporary American global-catastrophic-risk-environment analytical-literature. ## See Also - [[Existential Risk]] — adjacent contemporary global-catastrophic-risk analytical-framework - [[Climate Change Denialism]] — adjacent contemporary American Climate Change Denialism political-rhetorical-environment - [[US Strategic Nuclear Weapons]] — adjacent contemporary nuclear-weapon-substantial-risk-environment