Per capita does not work if you got economic inequality. The portion of the population that are rich should not have a blanket license to burn tires all day lon

Per capita does not work if you got economic inequality. The portion of the population that are rich should not have a blanket license to burn tires all day long just because the same country also have a large part of population that is so poor that they can't afford to buy tires. Per capita also in theory create perverse incentives. A rich country with high pollution per capita could anex a poor country and magically reduce their per capita pollution. Having a bunch of people under the same rule, but separated and segregated, should not impact the responsibility of reducing carbon emission. If can't use absolute numbers since those benefits developed countries, and we can't use per capita since those benefits countries with large economic inequality, we will just have to find a third way to measure it.