Climate Collapse

The most probable pathway is climate change crossing interconnected ecological and social thresholds. Rising temperatures, ocean heating, ice loss, and extreme weather are already straining food production, water supplies, infrastructure, and public health. Even if emissions decline, delayed mitigation and feedback loops—such as permafrost methane release, forest dieback, and weakening carbon sinks—could accelerate warming beyond current projections.

The decisive danger is systemic collapse: simultaneous crop failures, water scarcity, heat-related labor loss, mass displacement, and economic shocks could overwhelm governance. In a world marked by inequality, fragile states, and geopolitical rivalry, climate stress becomes a threat multiplier, increasing conflict, authoritarianism, and the failure of international cooperation. Once essential systems break, cascading disruptions could make large regions effectively uninhabitable and end modern global civilization.