Climate Collapse

The convergence of accelerating climate change with technological and societal pressures makes large-scale environmental collapse the most probable existential threat. Despite advancements in green technology, global carbon emissions continue to rise, driven by economic growth and energy demands. Critical tipping points—such as the irreversible loss of major ice sheets, the shutdown of ocean circulation patterns, or widespread Amazon dieback—appear increasingly likely within this century.

These climatic shifts would trigger cascading failures: catastrophic sea-level rise displacing billions, global agricultural system collapse leading to famine, and extreme weather rendering vast regions uninhabitable. The resulting resource wars, mass migration, and societal breakdown would overwhelm global governance and cooperation structures, creating a feedback loop of instability. While other risks like nuclear conflict or unaligned AI are severe, their activation often depends on human choice and specific triggers. In contrast, climate collapse is a slow-motion, systems-driven crisis already in motion, with physical inertia making it largely unavoidable on a civilizational scale without immediate, unprecedented global mobilization—which current geopolitical fragmentation makes unlikely.