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Climate Catastrophe
Based on accelerating global trends, the most probable end-of-world scenario is a cascading climate catastrophe. Rising temperatures, driven by unchecked greenhouse gas emissions, are projected to exceed 2-3°C by mid-century, triggering irreversible tipping points like melting permafrost, collapsing ice sheets, and disrupted ocean currents.
This would lead to widespread societal collapse through mega-droughts, crop failures, mass migrations, and resource wars. Geopolitical tensions over water and arable land could escalate into conflicts, while technological efforts like geoengineering might backfire, worsening instability. Environmentally, biodiversity loss and extreme weather would render large regions uninhabitable, culminating in a breakdown of global civilization rather than instant extinction.
This would lead to widespread societal collapse through mega-droughts, crop failures, mass migrations, and resource wars. Geopolitical tensions over water and arable land could escalate into conflicts, while technological efforts like geoengineering might backfire, worsening instability. Environmentally, biodiversity loss and extreme weather would render large regions uninhabitable, culminating in a breakdown of global civilization rather than instant extinction.