Links and Further Reading

Here are some videos, websites, and books that we recommend for further information about overpopulation. This list is not intended to be comprehensive but should serve as a starting point for further investigation.

Video and Audio

Ageing Population, No Problem. In this video, science educator Bruce Phillips shows that the benefits of an aging population far outweigh the disadvantages.

Alexandra Paul's TEDx video Actress Alexander Paul delivers a lively talk about the overpopulation crisis.

An Important Lesson (Consumption or Condoms). Science educator Bruce Phillips shares his most important sustainability lesson with his students.

Arithmetic, Population, and Energy. In this video lecture series, physicist Al Bartlett describes the incredible results of exponential growth.

"Being Fruitful Without Multiplying". An informative, inspiring audio sermon delivered by WPB President Emeritus, David Paxson in June, 2011 at Plymouth Congregational Church in Minneapolis, Minnesota with an introduction by Reverend James Gertmenian.

Chris Martenson's Crash Course. This compelling video seminar describes the interdependence of our economy, environment, and energy systems and the impossibility of infinite growth on our planet of finite resources. If you don't have time for the full-length seminar video, check out The 'Accelerated' Crash Course.

Great Minds: Karen Shragg - The Ticking Time Bomb of Population. In this two-part interview, journalist Thom Hartmann speaks with WPB Advisory Board member Karen Shragg about her insightful and powerful book, Move Upstream: A Call to Solve Overpopulation.

Human Population Through Time. This excellent, short video shows human population growth since the beginning of the species. 


Crowded Planet - This online resource library from the Center for Biological Diversity offers excellent, wide-ranging information about human pressures on the environment. 

Ending Overshoot. This Medium web page contains a variety of excellent essays written by WPB staff and volunteers that address overpopulation, overconsumption, and economic growth .

Global Footprint Network. Explore this informative website from the creators of the "ecological footprint" - a resource accounting tool that measures how much nature we have, how much we use, and who uses what. Also, you can calculate your personal ecological footprint.

INED (Institut National D'etudes Demographiques).  This website has an excellent population simulator and population statistics. 

Our World in Data: World Population Growth. This webpage has lots of population graphs and charts with clear descriptions and explanations.

Population Matters. This UK-based charity campaigns to achieve a sustainable human population, to protect the natural world and improve people's lives.

Post Carbon Institute. Several excellent videos are found on this web page about topics ranging from fossil fuels, economic growth, and the need for a smaller population to build a resilient society.

The Overpopulation Project. The website includes lots of information about the environmental impacts of overpopulation - and includes in-depth exploration of humane policies to end population growth around the world.

United Nations Department of Economic and Social Affairs: Population. This website is an excellent source for statistics and other information about world population and related issues.

Worldometers. Full of world population statistics, this site has the answer to virtually any population number question.

World Population Simulator.  This population simulator allows you to see the dramatic changes in human population that small changes in birth rates, child-bearing age, and life expectancy can create.


A Planet of 3 Billion by Christopher Tucker. The author makes the case that the Earth’s 'carrying capacity' is limited to 3 billion humans, and that humanity’s century long binge has incurred an unsustainable ecological debt that must be paid down promptly, or else cataclysm awaits.

Countdown by Alan Weisman. Weisman visits an extraordinary range of the world’s cultures, religions, nationalities, tribes, and political systems to learn what in their beliefs, histories, liturgies, or current circumstances might suggest that sometimes it’s in their own best interest to limit their growth.

Human Overpopulation Atlas: Volume 1 by João Luís Ramalho Abegão. This online atlas is a comprehensive overview of nearly all the issues connected to human overpopulation. 

Learning to Think Environmentally While there is Still Time by Lester Milbrath. This pocket-sized textbook presents the basics of environmental thinking in a very approachable format.

Life on the Brink: Environmentalists Confront Overpopulation by multiple authors. Some of the leading voices in the American environmental movement restate the case that population growth is a major force behind many of our most serious ecological problems, including global climate change, habitat loss and species extinctions, air and water pollution, and food and water scarcity. 

Man Swarm: How Overpopulation is Killing the Wild World by Dave Foreman. One of the very best books on our overpopulation crisis, Man Swarm helps us understand that only by stabilizing and then reducing human overpopulation can we stop wrecking our only home - Earth.

Move Upstream: A Call to Solve Overpopulation by Karen Shragg. This book challenges social and environmental activists to stop working downstream and take the problem of overpopulation seriously.

Overdevelopment, Overpopulation, Overshoot (OVER) edited by Tom Butler. Filled with huge, emotionally compelling photographs, OVER powerfully shows the ecological and social tragedies of humanity's ballooning numbers and consumption. OVER can be viewed online for free.

Overshoot: The Ecological Basis of Revolutionary Change by William Catton.  An essential book for fully understanding how industrial society has exceeded natural limits.