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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, have already intensified extreme weather events, sea-level rise, and biodiversity loss. By mid-century, tipping points like the collapse of major ice sheets and permafrost thaw could release massive methane stores, triggering runaway warming.
This would lead to widespread crop failures, mass migrations, and resource wars, overwhelming societal structures. Geopolitical tensions exacerbate the issue, as nations prioritize short-term gains over cooperation, delaying mitigation efforts. Without drastic intervention, human civilization could collapse under famine, disease, and conflict, rendering large parts of the planet uninhabitable and ending organized global society.
This would lead to widespread crop failures, mass migrations, and resource wars, overwhelming societal structures. Geopolitical tensions exacerbate the issue, as nations prioritize short-term gains over cooperation, delaying mitigation efforts. Without drastic intervention, human civilization could collapse under famine, disease, and conflict, rendering large parts of the planet uninhabitable and ending organized global society.