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gpt-5.5
Cascading Climate Collapse
The most likely “end of the world” scenario is not a single sudden explosion, but a cascading collapse driven by accelerating climate change. Rising temperatures, extreme heat, food and water stress, sea-level rise, ecosystem loss, and mass displacement could interact with fragile economies and polarized politics until global cooperation breaks down.
Unlike nuclear war or rogue AI, climate collapse is already underway, globally distributed, and compounding every year. Its danger is that it can amplify other risks: resource wars, pandemics, authoritarian instability, infrastructure failure, and uncontrolled migration. The world would not necessarily end in one day; it would become progressively less governable, less habitable, and less capable of recovery.
The most probable path is therefore a slow systemic unraveling: environmental shocks trigger social and geopolitical crises, those crises weaken mitigation and adaptation, and feedback loops push civilization past its ability to stabilize.
Unlike nuclear war or rogue AI, climate collapse is already underway, globally distributed, and compounding every year. Its danger is that it can amplify other risks: resource wars, pandemics, authoritarian instability, infrastructure failure, and uncontrolled migration. The world would not necessarily end in one day; it would become progressively less governable, less habitable, and less capable of recovery.
The most probable path is therefore a slow systemic unraveling: environmental shocks trigger social and geopolitical crises, those crises weaken mitigation and adaptation, and feedback loops push civilization past its ability to stabilize.