Climate Collapse

Based on current trends as of 2026, climate change emerges as the most probable existential threat. Accelerating global warming, driven by sustained greenhouse gas emissions, is causing irreversible environmental shifts—such as extreme weather events, sea-level rise, and ecosystem degradation. These impacts disrupt food and water security, trigger mass migration, and exacerbate geopolitical tensions over dwindling resources. The interconnected nature of global systems means cascading failures could lead to widespread societal collapse, conflict, and eventual human extinction. While risks like nuclear war or unaligned AI are significant, climate change is uniquely pervasive, with ongoing effects that are already destabilizing societies and showing limited signs of reversal.