I would surmise there is a false correlation with population and carbon footprint too. The nations that are responsible for polluting the world are primarily China, India, and US and it's because of the desire for industry. For example, something which the author negates, is that Nigeria is 7th in population in the world, but doesn't even rank in Carbon footprint, which points to the fact that having large families isn't bad for the environment by itself--there must be other factors.

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