Will global population peak below 10 billion?

A major media storm has erupted about a new scientific paper published in the Lancet claiming that global population will soon peak and decline. The prospect is met with doom and gloom, rather than jubilation. But Jane O’Sullivan finds many reasons to challenge both the claim and its assumed economic threat. By escalating unfounded fears … Continue reading Will global population peak below 10 billion?

New book argues for a sustainable world with 3 billion people

In his new book A Planet of 3 Billion, Christopher Tucker presents a vision of a future world inhabited by 3 billion people, compared to 7.8 billion today. Inspired by Joel Cohen’s 1995 book How Many People Can the Earth Support? Tucker sets out to answer exactly this question. The ecological destruction caused by humanity … Continue reading New book argues for a sustainable world with 3 billion people

Addressing Population Challenge Is Not Impossible

Societies can avoid a world population of 10.8 billion and related disasters – with education, contraception and emphasis on sustainability. by Joe Bish Human civilization faces a severe long-range mismatch between sustainable food yields and global population size. Some experts suggest a population sized at approximately two people per arable hectare would be ecologically sustainable. … Continue reading Addressing Population Challenge Is Not Impossible

Overshoot day: the other side of the coin

Every year on Earth Overshoot Day, a table becomes very popular, showing the number of Earths needed to be ecologically sustainable if all the people in the world had the same ecological footprint as the average citizens of various countries. This is computed by fixing the world population at the current value and varying the … Continue reading Overshoot day: the other side of the coin

Drawdown: a review of the Review

By Jane O'Sullivan Hats off to Paul Hawken, the environmentalist behind Project Drawdown. Three years ago, he published a best-selling book, ‘Drawdown: the most comprehensive plan ever proposed to reverse global warming’. The concept was brilliantly simple. It stripped away the complexity of how to respond to climate change, by cataloguing the hundred most impactful … Continue reading Drawdown: a review of the Review

TOP wraps up 2019 and prepares for the new decade

by Phil Cafaro and Frank Götmark Greetings! It’s been a busy year here at The Overpopulation Project. As many of you know, we have an active website, with a new blog almost every week and more invited authors this year. The total number of visitors to our website was 84,848 in 2019, and average monthly … Continue reading TOP wraps up 2019 and prepares for the new decade

US birth rate lowest in 30 years – the overlooked benefits

By Jenna Dodson The United States’ birth rate has fallen to a 30-year low, and the media is giving this new figure much attention. Unfortunately, most of that attention is misplaced. Since last week, countless news organizations released articles reviewing the new report from the Centers for Disease Control and Prevention (CDC) that documents the 3,853,472 … Continue reading US birth rate lowest in 30 years – the overlooked benefits

Are scientists using proper words to describe the negative influence of humans on the Earth’s ecosystems?

By Frank Götmark In "Responsible Use of Language in Scientific Writing and Science Communication"1  Kueffer and Larson discussed the role of language and concepts in scientific writing and communication. Researchers increasingly depend on marketing strategies to publish their findings and to obtain funding, according to the authors. They were especially interested in strong metaphors that may … Continue reading Are scientists using proper words to describe the negative influence of humans on the Earth’s ecosystems?

What is the optimal, sustainable population size of Humans?

by Patrícia Dérer It is possible to estimate an optimal human population size based on various criteria and assumptions. Here, we do not deal with the lower bound of the human population (the minimum viable population) as we are certainly well above that limit. Concerning the upper bound, we have to consider the carrying capacity … Continue reading What is the optimal, sustainable population size of Humans?

Including population growth in sustainability discussions, case study: Egypt

By Jenna Dodson Sustainable development has been defined as development that meets the needs of the present without compromising the ability of future generations to meet their own needs1. Using this definition, the United Nations developed a sustainable development framework centered around three pillars: economic, environmental, and social. Population is included in the social pillar … Continue reading Including population growth in sustainability discussions, case study: Egypt

Population and food security in Africa: a win-win opportunity

By Jenna Dodson Best estimates suggest nearly 300 million people in Africa are undernourished, and there is mounting evidence linking this food insecurity to rapid population growth 1–3. Recently, in “The impact of population growth and climate change on food security in Africa: looking ahead to 2050”, Hall et al. reaffirmed population growth to be … Continue reading Population and food security in Africa: a win-win opportunity