
TOP – Research and Outreach
Too many people consuming too much
A major new review of the state of the environment by the United Nations Environment Programme (UNEP) provides a comprehensive and refreshingly honest exploration of the root drivers of environmental degradation, and stresses the urgent need to overhaul how we live on this planet. by Olivia Nater, originally published by Population Connection The 7th edition…
With a population nearing 70 million, the UK is feeling the pressure on the housing and job markets. Stabilising the population would ease this pressure, giving more people access to affordable housing and strengthening wages, utlimately raising the quality of life for UK citizens. by R. M. Smilie Introduction The United Kingdom (UK) has rarely…
Degrowth is a relatively new word, and although there are different interpretations, one thing seems certain: sustainability cannot be reached without embracing degrowth. by Richard Grossman MD Recently I wrote about 2 words that have negative implications to many people, “population” and “overpopulation”. I’m now introducing a word that will be new to many people…
Touted as a conservation success story, new legislation in Arizona is actually a ploy to resume unsustainable development in areas that are running out of water. It foolishly seeks to override hard physical limits with paper water credits, displacing wildlife and farmland in service to sprawl. by Phil Cafaro In June 2025, the Arizona Department…
The Overpopulation Project has been ranked as one of the 10 best demography blogs of 2025 by FeedSpot. Thank you to all our readers for engaging with and sharing our work. For researchers working on historical population issues and interested lay persons, the Carl Wahren papers are a gold mine. See examples below, described by…
The Dutch government has collapsed twice in succession because of disagreements about immigration policy. Now the leader of the party that won the last elections by a landslide has pulled out of the ruling coalition. Why is immigration such a big issue in The Netherlands? By Jan van Weeren Two years ago, the Dutch government…
Population degrowth is a necessity to achieve a sustainable world. A new policy brief for the Nordic countries urges policymakers to rethink their commitment to continued growth and instead embrace the reality of demographic degrowth. By Pernilla Hansson Many countries around the globe are set to experience population decrease, with several dozen already doing so.…
Abrupt as they may seem, recent changes to US aid policies are consistent with the neoliberal economic ideology long championed by many Republicans, and embraced by many Democrats, since the Reagan presidency. Family planning was one of its casualties, according to Colin Butler. by Colin Butler The re-election of US President Donald Trump appears to…
Today coercion is much more prevalent globally in pronatalist policies that increase population size than it is in family planning policies that decrease fertility and limit population. For this and other reasons, the ‘pro-life’ movement is often anti-life in its consequences. by Jan Greguš, Masaryk University, Czech Republic When discussing population policies, many worry about…
That’s according to the editorial board of the New York Times, arguing for expanding immigration into the United States. Based on comments, most of their subscribers disagree. by Philip Cafaro By insisting that enforcing immigration limits is immoral, liberals in the U.S. have twice helped elect Donald Trump President. Facing a second Trump administration, some…
Immigration will be the key factor determining whether populations in the developed world increase or decrease over the coming century. Newly published policy-based population projections illustrate this for the United States. by Philip Cafaro Population size helps determine human societies’ environmental impacts. Given that immigration is a key factor influencing the size of human populations,…
Recent years have seen a concerted effort to rewrite post-war family planning efforts as one big racist, sexist, imperialist conspiracy. It is now important, as the last people who worked on these campaigns pass from the scene, to reflect honestly yet fairly on their work. Here Céline Delacroix, a senior fellow with the Population Institute,…
The global human population will increase by 2.4 billion to 2088, according to the UN. Birth rates are high in some parts of the world, leading to continued population growth. In Africa and parts of Asia, and within Muslim countries and communities, religiosity promotes high birth rates. This role of religion could, however, potentially be…
Immigration is proving to be a hot topic in the run up to EU parliamentary elections. While the focus has been on immigration’s cultural and social effects, changes in immigration policy could also impact future population numbers across Europe. This has consequences for citizens, the environment and ecosystems. by Philip Cafaro According to the European…
We note the passing of an admired leader in the field of family planning, our colleague and friend Carl Wahren. To commemorate his life and work, we share a new, wide-ranging interview with Carl about population policies and the changing role of the UN in international family planning. by The Overpopulation Project It is with…
This year marks the 30th anniversary of the United Nations International Conference on Population and Development (ICPD) in Cairo, a watershed event in international population and reproductive health policy. It’s a good time to reflect on its legacy. by Joseph Speidel and Jane N. O’Sullivan The ICPD Programme of Action (POA) has served as a…
Socialism or barbarism or … social democracy with a mature acceptance of limits to growth? That’s the question posed by Kohei Saito’s provocative new best-seller. by Philip Cafaro Let me admit right up front that I’m a little jealous. As a philosophy professor who’s written a few books but no best sellers (yet!), I can’t…
While population growth lies at the root of many environmental problems, concerned citizens often feel disempowered from addressing it. A popular initiative in Switzerland may provide a blueprint for activists in other developed countries. by Roland Schmutz After Swiss voters narrowly rejected joining the European Economic Area in 1992, the European Union and Switzerland began…
Pronatalists try to present their ideology as promoting the security of the family, but it is linked to the far-right agenda, uses falsified data to prove their points, and counteracts gender equality. By Nandita Bajaj There’s an insidious new tactic emerging for selling right-wing ideology to wider audiences, evident in [the September 2023] Budapest Demographic…
Recent United Nations population projections paint a comforting picture of immanent population stabilization. But what if they are wrong? Global population growth does not appear to be slowing as quickly as UN demographers have predicted, making widespread famines and run-away climate change more likely in the coming decades. By Jane O’Sullivan The Elon Musks of…
Then again, neither is anything else. The long lag time between fertility reduction and population stabilization is a key reason we need to address excessive human numbers sooner rather than later. by Phil Cafaro There’s an argument one often hears that goes like this: “sure, population is important. But we need to reduce our environmental…
Low birth rates are often regarded as problematic by major media, which overlook the perils of population increase. Here we show that unsustainable long-term population growth prevails in developing countries, despite historical family planning and gradually sinking birth rates. One lesson is that further reduced rates are urgently needed in high-fertility countries, in Africa and…
Australia is growing rapidly, in large part due to immigration. This causes strain on both infrastructure and the environment. By Sustainable Population Australia Sustainable Population Australia (SPA) considers Australia’s population growth rate in 2022 too high and called on the federal government to put a brake on immigration. The Australian Bureau of Statistics (ABS) released…
These islands were more-or-less isolated, microcosms that perhaps tell us what is going to happen with the global population. Anthropological accounts also describe remarkable forms of birth control. Do they tell us anything about how to achieve sustainable populations today? By Frank Götmark Easter Island, and historical background One of the most debated questions…
The ancient Greeks have exerted tremendous influence on western thought and culture, including in the realm of ethics. Yet few today realize that the founders of western political philosophy advocated a steady-state economy and limits to human numbers. by Theodore P. Lianos In the fifth century B.C., the Athenian philosopher Socrates (470-399) changed the course…
How important were immigration issues in the recent electoral triumph of Giorgia Meloni’s Fratelli d’Italia party? TOP’s chief Italian correspondent gives us her analysis. by Gaia Baracetti History does repeat itself – but not in the obvious way. One could fear we’re witnessing a second March on Rome exactly a century after the first, but…
To influence societal attitudes and population policy it is important for organizations that understand the population factor to reach out to politicians who can enact necessary changes. Below follows one such example, where the Swedish group Nätverket ‘Population Matters Sweden’ wrote letters to all members of the Swedish parliament, highlighting the need to address population…
Under the Paris Agreement of the UN Framework Convention on Climate Change (UNFCC), the nations of the world have made pledges known as nationally determined contributions (NDCs). These represent countries’ proposals to adapt to and mitigate (limit) global warming. A new publication assesses the NDCs’ treatment of population growth and family planning. by The Overpopulation…
One of the biggest obstacles to addressing overpopulation is the ignorance and timidity of most environmental funders regarding population issues. So we were happy to recently come across the following text on the website of the Colcom Foundation, a major environmental foundation out of Pittsburgh, Pennsylvania, USA. Particularly welcome are the direct links they draw…
Development aid often fails to address the root causes of poverty in poorer nations. A recently proposed program to further sexual and reproductive health in Uganda provides a welcome example of a more focused and effective approach. by Kelvin Thomson When I began full time work 45 years ago, I started paying a monthly sponsorship…
The family supplement, which gives extra financial aid for each additional child, was implemented in Sweden in 1982 at a time of falling birth rates. It now contributes to lock-in effects for immigrant women. Abolishing this supplement and limiting the child allowance to the first two children would help reduce social exclusion and public spending,…
After three decades of neglect, more environmentalists are waking back up to the need to limit human numbers. But like Rip Van Winkle, we find that the world changed while we were asleep. There are now billions more people, consuming more than ever, while our world has grown warmer, tamer, and more polluted. A new…
Those of us who care about overpopulation need to pay far more attention to the powerful pro-natalists who are coaching or instructing people to have more children. Religion is obviously a big factor, although not the only one, and there has been much coverage of evangelical Christians. Much less has been written about the Catholic…
Slowing population growth can have broad benefits for society, including enhancing the many ways that older citizens enrich our communities. By Jane O’Sullivan and Susann Roth As the Covid-19 pandemic continues to disrupt people’s livelihoods through a second year, a lot of people are choosing to defer having children. Media stories lament a ‘baby bust‘…
Demographic changes are not immediate, but rather take a long time to happen. In an article originally posted in The Ecological Citizen, Joe Bish argues that the population discussion needs to be reframed as an imperative to achieving a long-term sustainable civilisation, rather than an overriding priority for near term goals. By Joe Bish The…
The mainstream media rarely report about the role of population growth in environmental and climate disruptions, but the Op-Ed below was actually published in the high-circulating Swedish Social Democratic newspaper Aftonbladet a week ago. The original Swedish text is available here. The article gives a broad overview, ending with an unusual suggestion. There were 250…
































