[Arragonis]

The countries which have the greatest problem with population growth are those countries where the rate of chilbirth mortality and infant mortality are the greatest, and where there are issues with malnutrition. Solve those issues and the rate of population growth slows to become low enough to be sustainable.

To some extent I agree with Frank that this requires a solution outside of any influence of the church - whatever the denomination.

The problems with population in the first world are overwhelmingly due to an ageing population and not because of rampant childbirth (que someone bringing up a photo of a family with 18 kids and wanting more...) - the average age of our countries continues to rise as does the challenge of supporting the older folks in terms of income and medical care.

Immigration, despite what some politicians would have you believe, is not a major factor.