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The estimated “replacement fertility rate,” or the number of births required to maintain or increase the population, is 2.1 live births per woman. ... due to the way that the Social Security ...
The practice, traditionally referred to as population control, had historically been implemented mainly with the goal of increasing population growth, though from the 1950s to the 1980s, concerns about overpopulation and its effects on poverty, the environment and political stability led to efforts to reduce population growth rates in many ...
The basic thesis of the memorandum was that population growth in the least developed countries (LDCs) is a concern to US national security, because excess population growth, growth that exceeded local food, water, housing, waste handling and other humanitarian concerns would first cause local suffering would tend to risk civil unrest and political instability in countries that otherwise had a ...
This increased level of poverty eventually causes depopulation by decreasing birth rates. If asset prices keep increasing, social unrest would occur, which would likely cause a major war, revolution, or a famine. Societal collapse is an extreme but possible outcome from this process. The theory posits that such a catastrophe would force the ...
Simply put, researchers believe fewer people want to have kids since the birth rate is falling across all categories: age, race, education level, marital status and so on.
Countries need a fertility rate of about 2.1 kids per family to maintain a stable population. But two-thirds of the world's population already lives in countries where fertility is below this so ...
[3] [4] [5] Conversely, other researchers have found that national birth registries data from 2022 and 2023 that cover half the world's population indicate that the 2022 UN projections overestimated fertility rates by 10 to 20% and are already outdated, that the global fertility rate has possibly already fallen below the sub-replacement ...
In demography, demographic transition is a phenomenon and theory in the social sciences referring to the historical shift from high birth rates and high death rates to low birth rates and low death rates as societies attain more technology, education (especially of women), and economic development. [1]