The Population Bomb is a book published in 1968. It was written together by Paul R. Ehrlich, who was once a professor at Stanford University, and Anne H. Ehrlich, who was a researcher at Stanford who studied how to protect nature. The book warned that overpopulation could cause serious food shortages and other major problems in society. It also encouraged people to take action to slow population growth. Concerns about a rapid increase in population were already present during the baby boom years of the mid-20th century, but the book and its authors made these ideas known to more people.
Since the book was published, it has been criticized for being overly worried and for making predictions that did not come true. For example, some areas have had famines since the book was written, but the book’s prediction of worldwide famines did not happen. Paul Ehrlich and Anne Ehrlich still support the book’s message, even though critics have pointed out its mistakes. In 2009, Paul said the book’s biggest mistake was being too hopeful about the future, even though it predicted major global famines that never occurred. He and Anne believe the book was successful because it made people aware of environmental issues and brought attention to how population size affects the future of humanity. Others have argued that the book’s main idea was correct in highlighting how population growth poses many challenges, including threats to food supplies, Earth’s climate, air quality, fresh water, biodiversity, and the ability of governments to manage problems.
General description of the book
The Population Bomb was written after suggestions from David Brower, the leader of the Sierra Club, and Ian Ballantine of Ballantine Books. These suggestions followed public talks by Paul and Anne Ehrlich about population issues and their effects on the environment. Although Paul and Anne Ehrlich worked together on the book, the publisher wanted only one name listed as the author. The publisher also changed the original title, Population, Resources, and Environment, to The Population Bomb. This title was borrowed with permission from General William H. Draper, who was involved with the Population Crisis Committee. A pamphlet titled The Population Bomb Is Everyone's Baby was published in 1954 by the Hugh Moore Fund. Paul and Anne Ehrlich later expressed regret over the title, saying it was effective for marketing but led to misunderstandings about their work. They explained that their focus was not only on population numbers but also on other factors affecting human progress.
Early editions of The Population Bomb began with a statement about the state of the environment and food security. The book describes these issues as increasingly serious. Paul and Anne Ehrlich argued that the growing population made it difficult to feed everyone and placed increasing pressure on natural resources. They wrote that the world must control population growth, reducing it to zero or making it negative. They also suggested increasing food production temporarily.
Paul and Anne Ehrlich proposed several ideas to achieve these goals. They believed the United States should lead population control efforts because it used more resources than other countries and had a responsibility to reduce its impact. They also thought the U.S. needed to lead globally to avoid accusations of hypocrisy or racism. They suggested ideas such as adding temporary sterilants to water or food, but rejected them as impractical due to a lack of research. They proposed tax changes that would increase costs for families with more children and offer financial incentives for men who chose sterilization before having two children. They also suggested creating a powerful government department focused on population and environment, which would support research into better contraceptives, sterilizing agents, and prenatal sex detection (because families often continue having children until a boy is born). They called for laws guaranteeing the right to abortion and expanding sex education.
After discussing domestic policies, the book addressed foreign policy. It suggested a system called "triage," similar to ideas from William and Paul Paddock in Famine 1975!. Under this system, countries would be grouped based on their ability to feed themselves. Countries with strong programs to limit population growth and future self-sufficiency would continue to receive food aid. Countries like India, which were far behind in addressing population and food challenges, would lose food aid. The Ehrlichs believed this was the only realistic long-term strategy. They praised the Paddocks for their "courage and foresight" in proposing this solution. They also suggested public education programs and agricultural development in developing countries. They argued these efforts might need to happen outside the United Nations to choose specific regions and countries. They even supported encouraging separatist movements if they improved conditions compared to existing governments. They also mentioned supporting government-mandated sterilization of Indian men with three or more children.
The rest of the book discusses actions readers could take to help. It focuses on changing public opinion to pressure politicians to adopt the Ehrlichs' policies, which they believed were not politically possible in 1968. At the end, the authors acknowledged that their predictions might be wrong, as scientists must consider uncertainty. However, they believed their proposed solutions would benefit humanity regardless of future events.
The book sold over two million copies, raised awareness about population and environmental issues, and influenced public policy in the 1960s and 1970s. Before the book was published, world population growth had been increasing rapidly. After its release, the global population growth rate began to decline, dropping from 2.09% in 1968 to 1.09% in 2018.
Context
In 1948, two well-known books were published that started discussions about population and the environment: Fairfield Osborn’s Our Plundered Planet and William Vogt’s Road to Survival. These books influenced later works, such as the pamphlet The Population Bomb is Everyone's Baby by Hugh Everett Moore in 1954, and helped form early groups focused on population and environmental issues. In 1961, Marriner Eccles, a former leader of the Federal Reserve System, described the fast growth of the world’s population as the most important problem facing the world today, saying it could be more dangerous than atomic or hydrogen bombs. D.B. Luten noted that while The Population Bomb is often seen as a key book in the field, it actually ended the debates of the 1950s and 1960s. Paul Ehrlich explained that his beliefs about population growth were shaped by a lecture he heard Vogt give during his time in university in the early 1950s. For Ehrlich, these writers helped him understand the larger picture of what he had seen as a young naturalist.
Criticisms
The book The Population Bomb has been criticized for repeating ideas from Thomas Malthus, who argued that population growth would outpace food production unless controlled. Paul Ehrlich noted that between 1930 and 1970, the world’s population doubled from 2 billion to nearly 4 billion. He believed that food and other resources were nearly at their limits. Some critics say Ehrlich’s warnings about disaster within a few decades were more extreme than Malthus’s ideas. Unlike Malthus, Ehrlich did not suggest ways to avoid disaster completely, and he proposed solutions like starving countries that refused to control their populations.
Ehrlich was not the only person to make similar predictions in the 1960s and 1970s. Many believed that severe famines would soon occur. However, the Ehrlichs made specific predictions that did not come true, and they have been criticized for this. They admitted some predictions were wrong but argued that their overall message was still important. They said their warnings helped prevent some problems, and they claimed many of their predictions might still happen. Some people also criticized them for not accepting mistakes and for not changing their views when evidence showed otherwise.
In The Population Bomb, the authors claimed that hundreds of millions of people would die from famine in the 1970s and that the global death rate would rise. However, the global death rate has actually fallen since then, from 13 per 1,000 people in the 1960s to 10 per 1,000 in the 1980s. The world’s population has more than doubled, and the average calories consumed per person have increased by 24%. The United Nations does not track official hunger-related deaths, so it is hard to confirm the book’s claims. Ehrlich estimated that 200 to 300 million people had died of hunger since 1968, but this number covers 40 years, not the 10 to 20 years the book predicted.
Famine is not caused by global food shortages but by political issues, such as instability. Amartya Sen, a Nobel Prize-winning economist, said that countries with democracies and free press rarely face long-term famines. A 2010 UN report noted that 925 million people were hungry, but the percentage of undernourished people has dropped from 33% to 16% since the book was published.
Ehrlich once said India could not feed 200 million more people by 1980. However, India’s population grew rapidly, but the Green Revolution improved food production. By 2010, India’s population had nearly tripled since 1960, but malnutrition rates had dropped from 90% to less than 40%. Experts say corruption, not overpopulation, is the main cause of hunger in India. Amartya Sen also noted that famines occurred in India during British rule but not since it became a democracy.
Journalist Dan Gardner criticized Ehrlich for being overconfident and not admitting mistakes. He said Ehrlich claimed he made few major errors and only acknowledged one mistake, which actually supported his views. Others, like Jonathan Last, called the book “one of the most foolish books ever published.”
Economist Julian Simon and statistician Hans Rosling argued that the book’s predictions about 1970s famines were based on the wrong assumption that population growth would continue endlessly without technological or social progress. Simon said resources like metals are often replaced by new technologies, such as fiber optics replacing copper. Rosling noted that global fertility rates have dropped, especially in wealthier countries. Stewart Brand, a friend of Ehrlich, said the book’s assumption about population limits was proven wrong by changes in global population trends since 1963.
Critics say The Population Bomb used dramatic language and exaggerations instead of accurate information. Some experts believe Ehrlich should have been more careful in his writing. Others note that his emotionally powerful style made the book popular, even though it was not always original. A review in Natural History said Ehrlich did not use statistics to convince readers but instead used strong, dramatic language.
Ehrlich's response
In a 2004 interview with Grist Magazine, Ehrlich admitted that some predictions he made around the time The Population Bomb was published did not happen. However, he stated that many of his main ideas and claims were supported by scientific evidence.
When asked, "Were your predictions in The Population Bomb right?" Ehrlich answered:
In a 2009 article looking back at his work, Ehrlich responded to criticism that some of his predictions had not come true.
In a 2018 interview with The Guardian, Ehrlich said he still believed The Population Bomb helped begin important global discussions about population issues. However, he admitted the book had weaknesses, such as not focusing enough on climate change, overuse of resources, and unfairness in wealth distribution. He also addressed claims that his work was racist. Ehrlich argued that having too many wealthy people is a serious threat to the future of humanity, and that cultural and genetic diversity are valuable for humans. He supported a new way to share wealth globally to reduce overuse of resources by the rich. However, he noted that wealthy individuals who control global systems, such as those who attend important global meetings in Davos, are unlikely to allow such changes.