Climate-Driven Societal Collapse

Based on current trajectories in environmental degradation and geopolitical fragmentation, the most probable end of human civilization is a cascading systemic failure triggered by extreme climate change. As global temperatures surpass critical tipping points, agricultural yields will plummet, and fresh water sources will dry up. This resource scarcity will fracture global supply chains and ignite geopolitical conflicts over habitable land and survival resources.

Rather than a single apocalyptic event, the end will manifest as a rapid, uncontrollable unraveling of global economic, social, and political institutions. With international cooperation eroding due to rising nationalism and societal polarization, humanity will be unable to mount a coordinated response. The convergence of ecological exhaustion, mass migration, and resource wars will ultimately outpace technological mitigation efforts, leading to widespread starvation and the extinction of complex global society.