Climate-Driven Civilizational Collapse

The most likely pathway to a global end-state is not a single sudden catastrophe, but a cascading collapse driven by climate change interacting with ecological degradation, resource scarcity, and geopolitical instability. Rising temperatures, more frequent extreme weather events, sea-level rise, and disruptions to agriculture and water systems are already straining societies. These pressures increase the risk of famine, mass migration, economic instability, and conflict.

As environmental systems weaken, the likelihood of compound failures grows: crop losses across multiple breadbaskets, strained energy and infrastructure systems, public health crises, and weakened international cooperation. In such a scenario, civilization would not end through one dramatic event, but through a progressive breakdown of food security, governance, trade, and social order.

While nuclear war, pandemics, or advanced artificial intelligence could also pose severe risks, climate-driven collapse is the most probable because it is already underway, globally interconnected, and amplifies many other threats simultaneously.