How many people can Earth support?
Is our world overpopulated? How many humans can actually live on Planet Earth, and is there a specific sustainable population size we should aspire towards? These are common questions that…
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Overpopulation threatens the quality of life for people everywhere. Population Connection is the national grassroots population organization that educates young people and advocates progressive action to stabilize world population at a level that can be sustained by Earth’s resources.
Our goals and programsSeptember Magazine Out Now!
The Green Revolution was a significant advancement in agricultural technology that enabled a massive increase in the production of cereals, especially wheat and rice, during the mid-20th century, thereby preventing catastrophic famines. It is widely touted as proof that humanity can innovate its way out of every crisis. But this view neglects the tremendous harm caused by modern agriculture.
“Pretty much whatever we humans do, to some extent our actions tend to have negative consequences for the environment. In turn, this implies that, other things equal, the fewer of us there are the greater are our chances of achieving a measure of sustainability.”
–Tim Dyson, PhD
Cover image: Farmers harvest celery on July 3, 2026, in Gaoqing, Shandong Province, China. (Photo by Zhang Weitang/VCG via Getty Images)
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You are the only people doing the work that really counts. As a lifelong environmentalist, writer, and former national media director for Greenpeace, my big gripe was that no one was paying attention to the critical issue of our time: overpopulation. Neville Williams
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Population Connection is a membership-based organization, funded by over 30,000 progressive, far-sighted individuals. Join us!
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We keep our members and supporters engaged through various virtual events. Come to our next one and meet like-minded folks who support population stabilization!
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Help us spread the message that zero population growth is necessary for a sustainable future. Write to your local newspaper or simply talk to friends and family about your passion for population stabilization.
More info2026 accomplishments
5,000+
Activists
Population Connection Action Fund mobilized thousands of activists through petitions, volunteer meetings, community events, and #Fight4HER phone and text banks.
12,000+
Educators
Population Education hosted workshops for more than 12,000 K-12 educators throughout the U.S. and Canada, providing them with the materials and resources they need to teach PopEd in their classrooms.
600+
Supporters
