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Climate Catastrophe
Based on accelerating global trends, the most probable end-of-world scenario is a cascading climate catastrophe. Rising temperatures, driven by unchecked greenhouse gas emissions, are already intensifying extreme weather events like megadroughts, superstorms, and heatwaves, leading to widespread crop failures and food shortages by mid-century.
Geopolitically, resource scarcity from environmental degradation could spark conflicts over water and arable land, escalating into wars that disrupt global supply chains. Socially, mass migrations from uninhabitable regions would strain societies, fostering inequality and unrest. Technologically, while renewable energy advances offer mitigation, current adoption rates lag behind the tipping points of ice sheet collapse and permafrost thaw, releasing methane and amplifying warming in a feedback loop.
Without drastic policy shifts, this could culminate in societal collapse, biodiversity loss, and human extinction-level events within centuries, outpacing other risks like AI or nuclear war in likelihood due to its inevitability under business-as-usual trajectories.
Geopolitically, resource scarcity from environmental degradation could spark conflicts over water and arable land, escalating into wars that disrupt global supply chains. Socially, mass migrations from uninhabitable regions would strain societies, fostering inequality and unrest. Technologically, while renewable energy advances offer mitigation, current adoption rates lag behind the tipping points of ice sheet collapse and permafrost thaw, releasing methane and amplifying warming in a feedback loop.
Without drastic policy shifts, this could culminate in societal collapse, biodiversity loss, and human extinction-level events within centuries, outpacing other risks like AI or nuclear war in likelihood due to its inevitability under business-as-usual trajectories.