Climate Change after a Sudden Drop in Emissions

Suppose we have a world that saw a sudden collapse of civilization, not so violent that humans are suddenly struggling to survive but severe enough to cause humans to revert to a mix of city-state, village and nomadic living. My proposal is that world tension and political dissent caused the US to implode and the resulting economic and political void caused the rest of the world's powers to implode. How severe would this collapse have to be, what kind of population loss (in terms of an order of magnitude) would this kind of collapse result in, and what kind of climate change would this population loss cause?

posted over 6 years ago

Geoffrey Carlton‭

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