Collapse of Interdependent Systems

The most probable global catastrophic risk, given current trajectories, is a cascading failure of the Earth's interconnected life-support and human systems, triggered primarily by accelerating climate change and biodiversity loss. This is not a single event but a rapid, uncontrolled unraveling. Critical tipping points—such as the collapse of major ice sheets, die-off of coral reefs, or failure of global breadbaskets due to extreme weather—would compound each other. This ecological destabilization would trigger severe consequences for food and water security, mass migration, and geopolitical conflict over scarce resources. The resulting economic and political fractures would overwhelm the capacity of nations and international institutions to respond cooperatively, leading to a systemic breakdown of the global order and modern civilization as we know it.