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Climate Catastrophe
Based on accelerating global trends as of 2026, the most probable end-of-world scenario is a cascading climate catastrophe. Rising temperatures, extreme weather events, and ecosystem breakdowns—exacerbated by insufficient international action—could lead to widespread crop failures, mass migrations, and resource wars by mid-century.
Geopolitical tensions over water and arable land would intensify, potentially triggering conflicts that escalate into nuclear exchanges. Technological advancements in renewables and AI might mitigate some effects, but societal inertia and environmental tipping points (e.g., melting permafrost releasing methane) make irreversible collapse likely, resulting in human extinction through famine, disease, and uninhabitable regions.
Geopolitical tensions over water and arable land would intensify, potentially triggering conflicts that escalate into nuclear exchanges. Technological advancements in renewables and AI might mitigate some effects, but societal inertia and environmental tipping points (e.g., melting permafrost releasing methane) make irreversible collapse likely, resulting in human extinction through famine, disease, and uninhabitable regions.