Too many humans

Too Many Humans: the imperative to return the population to 1 billion connects global warming to population growth and argues for Zero Population Growth (ZPG) and then a long term reduction of the size of the human population. The goal of one billion was selected as that was the total human population in 1800, at the beginning of the century when the industrial revolution began. This goal will be achieved by the voluntary reduction of the birth rate to a level below the death rate, a status already reached by several countries.