Climate-Driven Civilizational Collapse

While nuclear war or a engineered pandemic are acute catastrophic risks, the most probable path to systemic global failure stems from the cascading effects of climate change. Current trajectories, even with stated international commitments, point toward warming exceeding 2.5°C by 2100. This level of change will trigger irreversible tipping points—such as the collapse of the West Antarctic ice sheet or the dieback of the Amazon rainforest—locking in centuries of sea-level rise and extreme weather disruption.

The resulting collapse of global agriculture, driven by prolonged droughts, floods, and pollinator loss, would cause worldwide famine. Mass migration from unlivable zones would destabilize nations, overwhelming governmental and international response capacities. This systemic stress—encompassing food insecurity, water scarcity, mass displacement, and the economic fallout—would fracture global cooperation, leading to conflict, institutional breakdown, and potentially the end of industrial civilization as we know it, even if pockets of humanity persist. This slow-moving catastrophe, already in motion, lacks immediate dramatic fixes versus its scale.