Sustainable Population Pledge

Recognizing that the world is in a crisis of 7+ billion people stripping the earth of vital resources, exacerbating dire poverty, misery and early deaths, and pushing many species to extinction:

Check one of the above.*

Further, I pledge to educate my family and friends that the most important single thing we can do to help create a truly sustainable world is to voluntarily choose to have no more than one child.

One child families can save humanity

Note: you can also print our Sustainable Population Pledge, sign, and mail to World Population Balance.

(To find out how else you can help, see Our Vision to Solve Overpopulation.)

Why a TWO child average will not solve overpopulation

  • With a two child average per woman (or per man), total population would go up by about two billion more before it even levels off! We must begin dramatically reducing births now – in order to achieve sustainable population and a viable planet for all people.

One child families can humanely solve overpopulation!

  • By averaging one child, total world population would decline by 2055 by one billion people – back to six billion. And by 2080, population would be below 3.5 billion – cutting our total human consumption in half from its current levels. Exponential population decline can help humanity return to a truly sustainable number of people on the planet.

One child families can save the world.

Overpopulation destroying planet and our future

  • Our world is in a human well-being crisis. Every year 75 million more acres of farmland are destroyed and lost to farming, net loss – every year (UN). Over half the world's 7 billion people are in countries where fresh water tables are falling.
  • We are destroying / losing 25 more acres of forest every minute, net loss (FAO). We are killing off 150 to 200 species every 24 hours (UNEP). Extinction rates are hundreds of times higher than normal.
  • Overconsumption of many "renewable" resources is rendering them nonrenewable. Alarmingly, we are consuming many non-renewable resources – fossil fuels, metals and minerals – at ever-increasing rates, as well.
  • We are struggling to live healthy lives on a dying planet. And many people are deluding themselves into believing that we can grow our way out of these problems.
  • According to research by the Global Footprint Network and other research organizations, we humans are currently consuming renewable resources over 50% faster than the truly sustainable rate. We are in consumption overshoot. And these calculations do not allocate any of Earth's habitat for wildlife. Instead, their analysis allocates all Earth's resources for human use.
  • To stop global overconsumption, depletion of resources and unprecedented loss of species – and significantly reduce dire human poverty – total world population needs to be between one and three billion people. That is the population range to be truly sustainable, long term, on the planet.
  • Therefore, the most important single action each of us can do to help create a truly sustainable planet and population is to choose to have one child and encourage others to have one child. (See the five minute film, "One Planet, One Child".)

We can solve overpopulation humanely.

Sign our Sustainable Population Pledge!

Signers - Sustainable Population Pledge

Alan R. Anderson - U.S.
Dave Paxson - U.S.
Alan Ware - U.S.

Karen Shragg - U.S. -  "I am a composting, organic vegan who teaches environmental education and speaks up on the overpopulation issue. But nothing I have done has been more fruitful than my choice not to multiply."

Carlota Mendoza Perez - U.S.
Toni Brandvold - U.S.
Virginia Ward - U.S.
Myra Starkenburg - U.S.
John Bohlig - U.S.
Donald Pine - U.S.

Thomas Breckenridge - U.S. -  "We must all be asking the question, 'Is it Sustainable?' when we look at our overpopulation situation. Then ask, 'What am I doing about it?' Thanks to World Population Balance for its continued witness and direction."

Nancy Paxson - U.S.
Joan Phillips - U.S.
Lawrence Turner - U.S.
Kendall Griffith - U.S.
Joan Wicklund - U.S.
Ruth Colby - U.S.
Helen R. Anderson - U.S.
Michael Hanauer - U.S.
Bettye Ware - U.S.
Clifton Ware - U.S.
Virginia Humphrey - U.S.
Ralph C. Colby - U.S.
Fred Elbel - U.S.
Raymond F. Smith - Australia
Jane Howard - U.S.
Patricia Baker - U.S.

Craig Blacklock - U.S. -  "Yes, I'm very happy to pledge to stop at our single child. We decided long before she was born, that we would only have one. This is the most loving gift we can give our daughter. If everyone would do this, she and the others of her generation would face a promising future, rather than one of certain declines in all measures of life."

Bruce Phillips - United Kingdom
Carolyn VandenDolder - U.S.
Barbara Franklin - U.S.
S. Scott Nicholas - U.S.
Marshall Carlson - U.S.
Harold Huggins - U.S.
Paula Barkmeier - U.S.
Grace Dyrud - U.S.
Nora Anderson - U.S.
Frosty Wooldridge - U.S.

Liz Todd - U.S. -  "Thank you for all you do in raising awareness to the overpopulation issue."

Edward Anderson - U.S.
Alexander Cutchey - U.S.
Katie Butcher - U.S.
Lorelei Swan - U.S.
Vernon Palm - U.S.
Dolly Coburn - U.S.
LaVonne Anderson - U.S.
Judith Kroening - U.S.
Gabe Ely - U.S.

Mark M. Giese - U.S. -  "Overpopulation is the world's biggest problem".

Colleen Ware - U.S.
Dave Gardner - U.S.

Veronica Egan - U.S. -  "This is humanity's number one issue. Nothing else will improve until we 'get it'".

John Massman - U.S.

Morgan Armitage - U.S. -  "No kids for me!"

Claire Henry - United Kingdom
Bob Petruzzi - U.S.
Priscilla Rich - U.S.
Danielle Montague-Judd - U.S.
Edmund Levering - U.S.
Bill Weir - U.S.
Richard Grossman - U.S.

Morgana Faeroe - U.S. -  "I thought this was a problem when I was a teenager 45 years ago so I chose to have my tubes tied then. People keep saying they are trying to make our world a better place for their grandchildren. Why can't they see if they don't look after it for themselves there will be no grandchildren?"

Renee Wallace - U.S.
Alex Borrell - Mexico
Charles Gessert - U.S.
David Yount - U.S.

Karion Minussi - Brazil -  "All problems start and end here: overpopulation!"

Mrinmoy Das - India -  "We should exercise this campaign to achieve a sustainable world."

Eric Koch - U.S. -  "We exist in an artificial prosperity created by mining the means to future prosperity."

Joseph Mitchener - U.S. -  "Years back, Stanford researchers estimated that the Earth could sustain over the long term only one to two billion humans at the then current European standard of living. We are more than three times over that limit now." 

Brett Cherrington - U.S. -  "While rarely mentioned, waiting as long as you are willing to have your one child (if you choose to have one), is also very important to maximize the benefit of limiting your reproduction. Wait as long as you can, but even waiting one more year makes a difference."

Jennifer Codiga - U.S.
Freya Gil - Columbia

Marcus Prometheus - Italy -  "I renounced having children in 1977 by having a vasectomy as I could not assure them a future in a world with population growing by billions."

Maria Requena - Chile
Carolina Mesa - Columbia

Danja Karenko - Finland -  "If I wanted a child, I would adopt. Just like I would never get a puppy from a breeder when the shelters are full of rescues."

Kitty Quen - U.S.
Ivvin Moran - Mexico

Alys Kennedy - U.S.  - "Given the world situation I believe it is imperative
that all humans elect to limit the birth of new children.  We already have millions who have been orphaned or live in abject poverty.  Let us use our maternal/paternal instincts to care for them and limit the birth of new children - everywhere."

Ada Alvarado - Guatemala

Abigail Roberts - U.S. - "The world cannot sustain the people it has now. Everyone has to start acting responsibly."

Mario Buenfil - Mexico  -  "Congratulations to all people signing this pledge. You are brave and conscious dwellers on this overcrowded world, luckily with our example and compromise we may change things in a non-violent way. The alternative, the "Laissez-faire" option, will surely lead to violence and suffering for billions of people."

Charles Hood, Jr. - U.S.
John Lambert - United Kingdom

Stacy Portner - U.S.  -   "I'm happy with my fur baby child, being an auntie to my nieces, and passing my legacy on through volunteer work to making the world a better place."

Alex Beane - U.S.
Dallas Rising - U.S.
Ferran Mir Culell - Spain
K. Schreiber - U.S.
Jose Salmeron - Brazil
Danish Parmar - Pakistan
Robin Pinegar - U.S.
Robert A. Jeffrey - United Kingdom
Peter Van Sant - U.S.

Vanessa Mattisto - Australia -  "We can do it!"

Kristin Lein - U.S.

Harriet Mitteldorf - U.S.

Cindy Kates - U.S.
Laura Carroll - U.S.
Vik Dylan - U.S.

Abdul Malik Ghauri - Pakistan -  "The only way to ensure sustainable peace is population planning."

W. Rhodes - U.S. - "Thank you for taking this head on before there is world-wide calamity, suffering, and death."

Kade Frazier - U.S.
Marcel Izeboud - Netherlands
Virginia Katz - U.S.
Andrew Mancuso - U.S.
Jonathan Waldman - U.S.
Catie Massey - U.S. 
Jon Swenson Tellekson - U.S.

Steven B. Kurtz - U.S. - "Overpopulation has been my #1 issue for over 25 years."

Daniel Stein - U.S.
Gabriel Teodor - Romania

Elizabeth Biswell - U.S. -  "The Earth cannot withstand all of us anymore. I pledge to help create a world sustainable for generations to come."

Lauda Gomez - U.S. - "May we succeed to help mother Earth and humanity together."

Monica Howanyk - U.S. 

Charlotte Davies - United Kingdom - "I have one 12 year old son, and it is wonderful.  I don't need to have any more children to have a solid, happy family."

Kylie Marchiori - U.S.  

Edith D'Angelo - U.S. - "We should think of future generations.  Anything we do now will affect the future."

Koda Windslow - U.S. 

Claudio Pestarino - Italy - "One child families can save humanity and other animal species and the global environment!" 

Jasmine Stark - U.S. 
Viktoria Lencses - New Zealand 
Jonathan Escobar - Argentina
Mario Guzman - Costa Rica
Sandra Bergland - U.S.

Michelle Greiwe - U.S. - "Parents would have much more attention to give when not divided between other siblings."

Ann Faris - U.S.
Joh Murray - Australia
Ashley Romero - U.S. 

Greg Mansfield - U.S. 

Mary Monzyk - U.S. - "Overpopulation is the cause of the frightening environmental problems we now face."

Carey Hellmers - U.S.
Dalton Neu - U.S.
Parker Hinton - U.S.
Caryn Hammond - U.S.
Silsa Gatewood - U.S.
Bryce Olson - U.S.
Dishant Shah - India
Sarah Pate - U.S.
Uriah Phillips - U.S.
Brian Toren - U.S.

Kathyrn Jean Morris - Indonesia - "We are addicted to population growth. We must change our thinking about what sustainable living really means."

Donald Offerman - U.S.
Daniel White - U.S.
Sandra Derr - U.S.
Lewis Bassett-Butt - United Kingdom
Gen Agustsson - U.S.
Kamahanalani Beck - U.S.
Trisha Rapier - U.S.

Cindy Burke - U.S. - "My husband and I are childless by choice, due to  understanding from a young age that overpopulation is the most critical problem facing humans as well as all other living entities on Earth.  We thank you for the work you are doing and hope to see a groundswell of support that reopens, on a world stage, this most necessary conversation."

Anny Martinez - U.S.

Andrea Ochmann - U.S. - "We have a responsibility to Earth and all its inhabitants to monitor our own population."

Jessica Padmanabhan - U.S.
Mitchell Garvey - Australia
Patricia Johnson - U.S.

Carolyn Sayers - U.S. - "We must wake up to this issue now!"

John England - United Kingdom
Taylor McClendon - U.S.

Cathleen Gempeler - U.S. - "I feel quite honored in my life that I did NOT have any children. So I see it from a liberating perspective now instead of feeling that it did not serve my womanhood. Thank you for all you do!"

Jake Owsley - U.S.
Barbara Nyegaard - U.S.
Nicholas St.-Onge - Canada
Tamara Sullivan - U.S.
Tammy Mccormack - U.S.
Fred Palmer - U.S.

Bedprakas Syamroy - India - "The world needs to be saved from destruction through load of human numbers"

Kristina Bryant - U.S.

Susan Peacock - U.S. - "Even as a child, it worried me that our failure to control population growth could ultimately destroy us as a species. Out of this concern for a quality of life, it seemed a moral imperative to my husband and I not to have children. We have tried to share this concern throughout our lives but it's so often seemed an isolated position. I have always been mystified at how it seemed no one else was worrying about it so thank you for the work you do!"

Molly Zupon - U.S. - "I want a world where people and animals can live well. I do sincerely believe we have an overpopulation problem and hereby swear to never have any children."

Sean Carlson - U.S.
Kristin Sells - U.S.
Eric Koch - U.S.
Dan From - Denmark
Don Kelly - U.S.
Sean McNichol - United Kingdom
Jill Jensen - U.S.
Tanja Olsen - Denmark
Krista Stone - U.S.

Claire Graham - United Kingdom - "Our planet is overpopulated and struggling with the amount of people on it. We do not need more!"

Krystal Jarvis - U.S.
Lydia Beke - Australia
Bethany Alexander - U.S.
Tiffany Morris - Australia
Aaron McConnell - Northern Ireland
Caitlin Burkhart - U.S.
Lindsey Luttrell - U.S.
Brenda Nelson - U.S.
Paige Ohmen - U.S.
Misty Johnson - U.S.
Carolyn Muse - U.S.
Linda Raimondi - Italy
Nikki Bennett - Australia
Brooke Anderson - U.S.

Deidra Tuxen - U.S. - "I have never given birth and my tubes are tied."

Holly Star - U.S.
Kaitlin Klassen - Canada
Laura Kolb - U.S.
Rachel Kayen - U.S.
Sarah Olivo - U.S.
Joseph Robson - United Kingdom
Gina De Naples - U.S.
Kayla Oliver - New Zealand
Adam Sneath - U.S.
Charlie Troy - U.S.
Dorian Lusco - U.S.

Lydia Cardona - U.S. - "When all the world's orphans are finally adopted only then should people have biological children."

Diana Harper - U.S.
April Cottrell - U.S.
Steve Williams - U.S.
Karl Burney - U.S.
Ruth Anthony-Gardner - U.S.
Megan Myers - U.S.
Johnn Escobar - Argentina
Alysia Adams - Australia
Peyton Ide - U.S.
Elley Smith - U.S.

Dayna Germani - Canada - "I pledge to do my part by someday soon getting fixed so I don't contribute to the overpopulation issue."

Ryan Prickler - U.S.

Abra Eden Larr - U.S. - "Issues like climate change and deforestation are directly linked to overpopulation. As an environmentalist I support this initiative to educate others about creating a truly sustainable Earth through a national Overpopulation Awareness campaign. I am but one though I hope one day to be one of MANY others like me who seek a brighter, more sustainable future."

Leanne Hayashi - Canada

Viswanathan Vaidyalingam - India"It is high time human beings understood that it should be populaSHUN. Clearly, we are sitting on a time bomb. And I am on a mission to create awareness among Indians now."

Leandro Coelho - Brazil
Dev Corbitt - U.S.
Satchel Joseph - U.S.
Panagiotis Nikoletopoulos -Greece

Edward Benckert - U.S."People need to see the benefits are not just sustainability but a radical rise in the quality of life for all the planet's inhabitants."

Mindy Weidner - U.S.
Ben Molesky - Canada
Molly Geissman - U.S.
Thomas McCloskey - U.S.
Navin Parti - India
Tess Roesch- U.S.

Richard Vernon - United Kingdom "My primary aspiration is to see a world where the one species whose ecological footprint on this Earth is heavier than those of all other species, comes to recognize this fact and make the changes necessary, including a significant reduction in our numbers."

Gisela Olsson - Sweden
Toni Kemp - U.S.
Garnetta Dittrich - U.S.

David Rust - U.S. "If we do not set aside our differences and solve our overpopulation problem we are doomed on planet Earth. Mankind will go the way of the dinosaur."

Riley Lewis - U.S.
Arun Isaac - India
Robert Schmitz - U.S.

Trevor Higgs - Canada "We need to wake up the rest of the world to this "bomb" so that humanity might have some type of decent future."

Poshan Li - Australia "Challenging overpopulation goes beyond caring for the planet as a human resource. It recognizes limits to our place within an ecosystem that can and should support a host of living beings."

Adam Medina - U.S.
Venk Shenoi - U.K.

Judith Suess - U.S. "I love the billfold size cards and as I distribute them the responses are very positive."

Stephen McKevitt- U.S.
Robert Sanger - U.S.

Wilbur Ince - U.S. "I care about all of us and want to raise awareness about overpopulation!"

Michelle Lyons - U.S. "I saw the issues in the country and our world and made the decision that I wasn't going to bring kids into this world. I've so wished that more felt this way."

Marika Rautiainen - Finland "Before you insist on your rights to another child to satisfy your own needs - Think! Think of the needs of the people who remain after you're gone."

Lora Smith - United Kingdom

Justice Stallman - Australia "I think this is a fantastic idea to solve overpopulation and many of our planet's environmental issues. I support this one hundred percent."

Heather Hegi - U.S.
William Little - U.S.

Deb Thompson - U.S. "Too much of anything is not good for us, and that includes children."

Debbie Lowenson - U.S.
Luke Fletcher - U.S.
Jay Hunter - U.S.

Renae Wilson - U.S. "Overpopulation is a really big problem and can be solved with a little bit of effort."

Genevra Griggs - U.K.
David Kidd - U.S.
Artis Driksna - U.K.
Johnn Escobar - Argentina
Saaketh Jasti - U.S.
Tim Robinson - U.S.
Tom Hartman - U.S.
Andre Day - Australia

Anthony Ries - Canada "Overpopulation is a serious problem and the root of almost every serious problem in this world."

Barry Goldman - Australia " Overpopulation of humans is the planet's single most significant issue - other matters, like global warming and depleted water supplies, are merely symptoms - attempts to control them are simply bandaid solutions."

John Morris - U.S.
Michael Reese - Australia

Garrett Deletti - U.S. " Why is this not a bigger issue in politics and media, and why isn't everyone talking about this every day?"

Jeremy Johnson - U.S.
Devin Talley - U.S.

Allison Mcgee - U.S. " I love what you propose! It would give hope to our Earth, our future."

Rajan Choudhary - India
Martin Hempel - Germany
Christina Henson - U.S.
Vicki Beyerlein - U.S.
Aaron Burrows - Australia
Amber Clark - U.S.

Dennison Dolato - U.S. " Population must be reduced and I believe reason will win the day as the facts get out and enlightenment continues."

Lucas Oldham - U.K.
Max Coates - Spain
Lynn Foley - U.S.
Eric Rimmer - U.K.
Katarina Lang - U.S.
Jana Eliasson - Germany
Robert Krips - U.S.

Christina Corser - U.K. " Human overpopulation is the single greatest threat to our amazing planet."

Benny Keuning - Netherlands
Susana Sanchez - Mexico
Helen Sylvan - Sweden
Gabriele Negro - United Kingdom
Bissera Ivanova - Bulgaria
Darby Bascome - U.S.
Robin Iverson - U.S.
Jessica Lensbower - U.S.

Byrna Gallagher - U.S. " It is good for my heart to see the many names of others who also care deeply and passionately and fearlessly about Earth--who care enough, in fact to do the single most personally and ecologically impactful thing of all in its name."

Symone Saul - U.S.
Chris Tilley - South Africa

Mark Strauss - U.S. "I would love to spread the knowledge of this issue - overpopulation of the human species - which is the biggest problem facing the human race."

Holly Wojton - U.S.
Brent Will - Canada

Robert Schmitz - U.S. "Most of our sustainability concerns are directly related to overpopulation."

Sean Pefley - U.S.

Timothy Henderson - U.S. " I can't fathom how the people of this wonderful planet refuse to accept that a lot of the ecological and economic problems we endure can be greatly attributed to the population of our species."

Julia Ludwick - U.S.
Paige Summers - U.S.
Carl Prakaashana - U.S.
James Gayhart - U.S.
Richard Monroe - U.S.

Holly Turner - U.S. " I agreed to sterilization after having only one child. The choice for me to not bring greater suffering was one of compassionate sacrifice."

Deez Nurtz - U.S.
Jim Bastian - U.S.
Elaine Winter - U.S.
Ann Schley - U.S.
Mark Blondeau - Canada

Maryann Balish - U.S. " We all need to work together to stop the world's largest problem - OVERPOPULATION."

Gene Cook - U.S. " I'm 72 years old and have seen the world population increase by a factor of 3 in my lifetime. Our planet cannot long sustain that number of human beings."

Ana Knezevich - U.S.
Karen Flower - United Kingdom

Sju Georgine Thorup - Denmark " We must help each other get this important message out for the sake of a healthy and happy humanity."

Ana Knezevich - U.S.
Nigel Theobald - United Kingdom
Andrea Rogers - U.S.
Kaden Griffith - Germany
Ted Duepner - U.S.
David Trauger - U.S.

Jayram Govindarajan - India "Water and air are fundamental to healthy living. Overpopulation will make it very difficult to administer resources, safety, and education for the masses of people."

Kirsten Stade - U.S. "Unsustainable human population growth underlies every existential threat looming against our planet and human civilization, from climate change to the biodiversity crisis to spreading desertification, water shortages, the refugee crisis and Islamic extremism. As an environmental and peace activist, it would be hypocritical for me to have a child."

Kristie Metzger - U.S.

Christina Corser - United Kingdom "The expanding human population is at the root of all the demands we make which wreck the planet."

Sara Dastoum - France

Jason Gordon - U.S. "The rate of poverty, social equity depletion, environmental degradation, and a decrease in resources all rise as a function of increases in population size."

Diane McMahon - U.S.
James Deacon - United Kingdom
Victoria Raines - U.S.