Since the population of mankind is a "closed" population - no humans can migrate to and from earth, only the rate of births and deaths can increase or decrease the human population.
Therefore, the way to control the population growth is through the increase of the human mortality rate by legitimate means. Not through the crimes of abortions, infanticide, euthanasia and etc; but through the automatic DEATH PENALTY for the broad spectrum of deeds that are high crimes in the sight of the true GOD. This principle of population control has never been addressed by demography. It is the cornerstone of proper human population control which the builders have rejected.
Some of the high crimes which God requires the human society to vigorously enforce the death penalty upon are: blasphemy against the true God; idolatry; breaking the Lord's day; dishonor to parents; murder; adultery; incest; homosexuality; bestiality; rape; kidnapping; seeking to destroy the righteous; putting to death the innocent (such as putting innocent embryos and fetuses to death in abortions); seeking to overthrow God's appointed authority, etc.
In order for the world community of humans to actually put this decorous principle into practice, it must adopt the MORAL LAW OF GOD - THE TEN COMMANDMENTS as the supreme laws of the World community.
This principle of controlling the population would positively affect the economic prosperity of nations, positively affect the health and increase the life expectancy of lawabidding citizens, properly educate the human race, positively affect the family structure, overwhelmingly reduce crime, etc. Every legitimate aspect of the human society would benefit greatly.