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Climate Collapse
Based on accelerating global trends, the most likely world-ending scenario is a cascading climate collapse driven by unchecked environmental degradation. Rising temperatures, extreme weather events, and biodiversity loss are already disrupting food systems, water supplies, and habitable zones, with projections indicating billions displaced by 2050. Geopolitical tensions over resources could escalate into conflicts, while societal breakdowns from mass migrations and economic fallout amplify the chaos.
Technological advancements in renewables offer mitigation, but insufficient political will and corporate inertia suggest tipping points—like melting permafrost releasing methane or collapsing ice sheets—will trigger irreversible feedback loops. This could lead to a hothouse Earth state, rendering large swathes uninhabitable and collapsing civilization within decades, outpacing other risks like AI mishaps or pandemics in probability and immediacy.
Technological advancements in renewables offer mitigation, but insufficient political will and corporate inertia suggest tipping points—like melting permafrost releasing methane or collapsing ice sheets—will trigger irreversible feedback loops. This could lead to a hothouse Earth state, rendering large swathes uninhabitable and collapsing civilization within decades, outpacing other risks like AI mishaps or pandemics in probability and immediacy.