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Climate Catastrophe
Based on accelerating global trends as of 2026, the most probable world-ending scenario is a cascading climate catastrophe. Rising temperatures, driven by unchecked greenhouse gas emissions, are intensifying extreme weather events, sea-level rise, and biodiversity loss. This could lead to widespread crop failures, mass migrations, and societal collapse by mid-century, exacerbating resource wars and economic breakdowns.
Geopolitical tensions, such as conflicts over water and arable land, combined with technological failures in mitigation efforts, would amplify the crisis. Without drastic interventions, feedback loops like methane releases from permafrost could push the planet past tipping points, rendering large areas uninhabitable and triggering a irreversible extinction event for humanity and most species.
Geopolitical tensions, such as conflicts over water and arable land, combined with technological failures in mitigation efforts, would amplify the crisis. Without drastic interventions, feedback loops like methane releases from permafrost could push the planet past tipping points, rendering large areas uninhabitable and triggering a irreversible extinction event for humanity and most species.