Researchers, whose article was published in the journal *Sustainable Development*, have proposed gradually reducing the world’s population from over 8 billion to around 4 billion by the year 2200. In their view, this would ease the pressure on resources and ecosystems, and reduce pollution and CO₂ emissions. The authors emphasise that this is not about coercion, but about access to family planning and education.
Briefly about the main points
- Researchers have set a target of 4 billion people by 2200.
- The authors attribute the smaller population size to less pressure on resources.
- The authors reject coercive control, eugenics and mass extermination.
- The proposed approach is girls’ education and family planning.
- Critics point to the unequal distribution of resources and past abuses.
Demographic projections up to the year 2200
The authors believe that a gradual end to population growth and its subsequent «gentle and fair» decline could help to protect natural habitats, wild species and the climate. They also call for a reduction in per capita consumption, as they believe the planet’s limited resources are incompatible with an endless increase in material demand.
У articles It is argued that smaller families in regions with high birth rates could alleviate poverty, whilst a reduction in overall consumption could reduce pollution and conflicts over resources. This is the view of the study’s authors, not an established forecast for the future of humanity.
A commitment to freedom of choice, rather than restrictions
The researchers explicitly reject forced birth control, mass extermination and eugenics. The approach they propose is based on expanding access to comprehensive family planning and educational opportunities for girls, particularly in low-income countries.
The authors cite Iran, South Korea and Costa Rica as examples of the link between such programmes and a decline in the birth rate. In Iran, the rate fell from 4.08 children per woman in 1992 to 1.94 in 2001; in South Korea, from 4.07 in 1972 to 1.93 in 1984; and in Costa Rica, from 4.16 in 1972 to 1.98 in 2009.
At the same time, the debate on «overpopulation» has a complex history. Critics of such approaches point out that environmental problems are determined not only by the number of people, but also by the unequal distribution of resources, excessive consumption and the failure of governments and businesses to establish sustainable systems. They also draw attention to the forced sterilisations and discriminatory reproductive policies of the past. This is precisely why the authors’ emphasis on voluntariness and women’s rights is central to their proposal.
The dispute goes beyond the number of people involved
The study does not reduce the issue of sustainability to demographics alone. Its authors believe that a reduction in the rate of population growth will not resolve the environmental burden without more moderate consumption. Consequently, the proposed target of 4 billion is part of a broader critique of the model of continuous economic and material growth.
This approach will inevitably remain a subject of controversy: it combines environmental objectives with the issue of reproductive rights, where historical experience highlights the particular importance of voluntary participation, equal access to services and the absence of discrimination.
