Population

POPULATION

On October 28 , 2024, the world population is almost 8.2 billion. Without further action to limit population growth, the UN estimatesthere will be 8.6 billion people in 2030, 9.8 billion in 2050, and 11.2 billion in 2100. With roughly 83 million people being added to the world’s population every year, the upward trend in population size is expected to continue, even assuming that fertility levels will continue to decline. In the spring of 2023 the population of India surpassed that of China while the U.S. remained a distance third where it is projected to remain until 2050 when Nigeria will move into third place.

As Population Matters put it, “Every additional person increases carbon emissions - the rich far more than the poor - and increases the number of climate change victims - the poor far more than the rich.” 

A 2022 study from Project Drawdown reveals that family planning and universal education are two key policy solutions that combined could reduce emissions by 68.9 gigatons by 2050. 

There is clearly a direct correlation between population and climate change.

CURRENT NEWS

For Too Long We Have Been Taking Fresh Water for Granted

By David Houle 08/12/26
All my life, living in post-WWII America, the water was always available. In the kitchen, in the bathroom, in the laundry room, it was always available. It was expected that fresh, filtered [by the city,…
Read more

Last Week in Collapse: July 26-August 1, 2026

08/02/26
when our green planet used up its biocapacity for the year—fell on Thursday, July 30 this year. In other words, we cannot regenerate our resources faster than we use them; it would take 1.73 earths…
Read more

Interview with Christopher Tucker – A Planet of 3 billion

By David Houle 05/29/26
In a column I published last week, I mentioned the influence of an author and book that changed my thinking about population. That author is Christopher Tucker and the book is “A Planet of 3…
Read more

Babies, Robots and Climate Change

By Katrin Bennhold 02/04/26
One statistic that stopped me recently is that China’s population is projected by some experts to halve by the end of the century. Halve! China was the most populous country in the world until only…
Read more

Do We Need Another Green Revolution?

By Elizabeth Kolbert 06/23/25
The Green Revolution got off to a rocky start. In the fall of 1944, Norman Borlaug, who would become known as the revolution’s father, moved to Mexico to set up a plant-breeding program. Right away,…
Read more

Coastal cities’ growing hurricane vulnerability is fed by both climate change and unbridled population growth

By Wanyun Shao 09/11/24
Warm water in the Atlantic Ocean and Gulf of Mexico can fuel powerful hurricanes, but how destructive a storm becomes isn’t just about the climate and weather – it also depends on the people and…
Read more

We need to talk about water – and the fact that the world is running out of it

By George Monbiot 03/04/24
There’s a flaw in the plan. It’s not a small one: it is an Earth-sized hole in our calculations. To keep pace with the global demand for food, crop production needs to grow by at…
Read more

Is World Population Peaking Now?

By Richard Heinberg 02/07/24
A couple of years ago I read a paper titled “Footprints to Singularity: A Global Population Model Explains Late 20th Century Slow-Down and Predicts Peak Within Ten Years.” The banner finding of the paper—that world…
Read more

Should climate change keep you from having kids?

By Daisy Simmons 02/02/24
“Aparticular sort of demographic thing was going on for us both — you know, the finger-wagging around children,” says Meghan Elizabeth Kallman, remembering the period of her life when she met Josephine Ferorelli at a…
Read more

Peak People – Part One

By David Houle 11/22/23
This is the third peak I have been writing about. Peak Oil and Peak Auto were each topics that could be covered in a single column. I have forecast both to occur within the next…
Read more

Humanity is going to shrink

By Noah Smith 08/23/23
The problem with population growth projections is that they naturally follow an exponential curve. When “like begets like” — when the number of kids is just proportional to how many people are currently alive to…
Read more

The Alternative, Optimistic Story of Population Decline

By Wang Feng 01/30/23
The shoe has dropped. The big one. China, the most populous country on the planet for centuries, this month reported its first population decline in six decades, a trend that is almost certainly irreversible. By…
Read more

KEY RESOURCES

A Planet of 3 Billion

06/07/21
Tucker 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…

Population Matters

09/16/19
Our vision is of a future with a good quality of life for all, a healthy and biodiverse environment, and a stable and sustainable population size.

Human Population Growth and Climate Change

09/11/19
The largest single threat to the ecology and biodiversity of the planet in the decades to come will be global climate disruption due to the buildup of human-generated greenhouse gases in the atmosphere. People around…

MORE NEWS

The Overpopulation Podcast: The political hazards of discussing overpopulation

12/24/19  
Bernie Sanders was asked about human overpopulation. How did he handle it? And how was that reported by the media and received by the public? The Overpopulation Podcast team offers observations and analysis....
Read more

For Caribbean nations, climate change means shrinking populations

By Kenya Evelyn   12/22/19  
Vieques, the small island community off the eastern coast of Puerto Rico, looks much the way it did before Hurricanes Irma and Maria wreaked havoc in September 2017. Business is booming at the bar and…
Read more

Educating Girls Would Save 59.6 Gigatons of Carbon by 2050

11/10/19  
Educating girls leads to economic growth, and also to lower population rates, since educated women will not only have healthier babies, but fewer of them.
Read more

Critics blast a proposal to curb climate change by halting population growth

By James Temple   11/05/19  
More than 11,000 scientists signed a paper arguing the world needs to stabilize or gradually reduce the global population.
Read more

This Controversial Way to Combat Climate Change Might Be the Most Effective

By Michael Shank   10/29/19  
What's less frequently discussed when it comes to personal contributions people can make, is also one of the most effective actions on the climate front: a smaller family size.
Read more
CBC

Is population control the answer to fixing climate change?

By Nicole Mortillaro   10/29/19  
The argument some people present is that if there were fewer people on Earth, greenhouse gases would be reduced and climate change could be averted. But experts say population control isn't the panacea some might…
Read more
CJR

For many reporters covering climate, population remains the elephant in the room

By Wudan Yan   09/18/19  
“If seeing the world helps ruin it, should we stay home?” In it, he raised the question of whether or not travel by plane, boat, or car—all of which contribute to climate change, rising sea…
Read more

Bernie Sanders in climate change ‘population control’ uproar

09/05/19  
Democratic presidential candidate Bernie Sanders has been criticised after arguing population control should be part of tackling climate change.
Read more
Vox

We’ve worried about overpopulation for centuries. And we’ve always been wrong.

By Kelsey Piper   08/20/19  
For nearly all of human history, there haven’t been that many of us. Around the year zero, Earth’s population is estimated to have been 190 million. A thousand years later, it was probably around 250…
Read more

Joe Sandler Clarke: Does overpopulation cause climate change?

By Joe Sandler Clarke   08/14/19  
"What we need to remind everybody is: these are things that are happening now," Prince Harry told ethologist Dr Jane Goodall in a recent interview in British Vogue. "We are already living in it. We…
Read more
IOL

Population growth ‘a threat to planetary health’

07/23/19  
When Dr Jane Goodall began studying chimpanzees in Gombe National Park in 1960, it was part of a forest belt stretching from western East Africa to the west African coast, across equatorial Africa...
Read more

World Population Day: Fastest-growing countries; Guinea, Chad, Mali

By Elzy Kolb   07/10/19  
World Population Day, July 11, is just around the corner. It was established in 1989 by the Governing Council of the United Nations Development Program to turn our focus to population issues....
Read more
CNN

BirthStrike: The people refusing to have kids, because of ‘the ecological crisis’

By Stephanie Bailey   06/26/19  
A movement of women have decided not to procreate in response to the coming ‘climate breakdown and civilisation collapse’. Will their protest be a catalyst for change?...
Read more

BirthStrikers: Meet the women who refuse to have children until climate change ends

By Elle Hunt   03/13/19  
A movement of women have decided not to procreate in response to the coming ‘climate breakdown and civilisation collapse’. Will their protest be a catalyst for change?...
Read more

Climate change and population growth are making the world’s water woes more urgent

02/28/19  
As it scours the universe for signs of extraterrestrial life, nasa has a motto-cum-mission-statement: “Follow the water”. About 70% of the human body is made up of water, it says, and 70% of Earth’s surface…
Read more

Family size grows when girls’ education withers

02/06/19  
Fertility rates in some African nations fell less quickly when fewer girls finished primary school.
Read more

Katharine Wilkinson: How empowering women and girls can help stop global warming

By Katharine Wilkinson   11/01/18  
If we really want to address climate change, we need to make gender equity a reality, says writer and environmentalist Katharine Wilkinson.
Read more

Population Control Is the Climate Change Fix Nobody Wants to Talk About

By Yasmin Tayag   08/31/18  
The greatest driver of climate change is greenhouse gas emissions, which the Science Forum authors, which include renowned demographer John Bongaarts, Ph.D., of the Population Center and Brian C. O’Neil, Ph.D., of the National Center…
Read more

To Stop Climate Change, Educate Girls and Give them Birth Control

By Robin George Andrews   02/18/18  
Opinion: When women aren’t educated or empowered to make their own family planning decisions, the effects can lead to higher carbon emissions.
Read more

Want to fight climate change? Have fewer children

By Damian Carrington   07/12/17  
The greatest impact individuals can have in fighting climate change is to have one fewer child, according to a new study that identifies the most effective ways people can cut their carbon emissions.
Read more

The Urban Fix: Resilient Cities in the War Against Climate Change, Heat Islands and Overpopulation (2019)⭐

By Douglas Kelbaugh   11/13/19  
Cities are one of the most significant contributors to global climate change. The rapid speed at which urban centers use large amounts of resources adds to the global crisis and can lead to extreme local…
Read more

World’s population could swell to 10.9 billion by 2100, U.N. report finds

By Patrick Barkham   06/17/19  
The growth will increase humanity’s footprint on the planet, which could exacerbate hunger, poverty and climate change, experts say.
Read more