But how should we respond, especially here in the developed, western world? The bulk of the growth is projected to occur in Africa where our influence can only be indirect. Our own consumption may be a greater problem, and even our pets consume more resources than entire humans elsewhere. A 2008 analysis showed that a child born in America can be expected to add 85 times as much carbon to the atmosphere as one born in Nigeria, while Nigeria's fertility rate is only twice as high. Meanwhile, the population of many countries continues to age, and many appear inclined to encourage births. Even China has relaxed its successfully -- and often brutal -- One Child Policy.
How should the world respond to this challenge, and how should we respond personally? What practical solutions are available to stabilize or even reduce the population? Where should this discussion take us and what should our priorities be?