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The world population is 7.9 billion people

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The world population is 7.9 billion people

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Step 1: The world

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Human population growth has increased in recent centuries due to medical advancements and improved agricultural productivity. Those concerned by this trend argue that it results in a level of resource consumption which exceeds the environment's carrying capacity, leading to population overshoot.

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Human population growth has increased in recent centuries due to medical advancements and improved agricultural productivity. Those concerned by this trend argue that it results in a level of resource consumption which exceeds the environment's carrying capacity, leading to population overshoot.

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step 2: why the population is to high

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Image resultThis table provides figures about the 50 most populous nations in the world as of 2021. China is the most populous country with nearly 1.4 billion residents.

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Image resultThis table provides figures about the 50 most populous nations in the world as of 2021. China is the most populous country with nearly 1.4 billion residents.

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step 3: what countries are over populated

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Image resultVatican City1. Vatican City: With a population of around 1,000 people (as per 2017 data), Vatican City is the least populated country in the world. Interestingly, Vatican City is also the smallest country in the world by land area at 0.17 square miles (0.44 square km)

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Image resultVatican City1. Vatican City: With a population of around 1,000 people (as per 2017 data), Vatican City is the least populated country in the world. Interestingly, Vatican City is also the smallest country in the world by land area at 0.17 square miles (0.44 square km)

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step 4: least populated country.

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Although still growing, global population is predicted to level out around the end of the 21st century, and some sources predict the start of a decline before then. The principal cause of this phenomenon is the abrupt decline in the global total fertility rate, from 5.0 in 1960 to 2.3 in 2020.

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Although still growing, global population is predicted to level out around the end of the 21st century, and some sources predict the start of a decline before then. The principal cause of this phenomenon is the abrupt decline in the global total fertility rate, from 5.0 in 1960 to 2.3 in 2020.

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step 5 will the world population decline

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Promote family planning. ...Make education entertaining. ...Government incentives. ...5) One-child legislation.

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Promote family planning. ...Make education entertaining. ...Government incentives. ...5) One-child legislation.

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step 6: How can we stop population growth?

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If nothing changes, the U.S. Census Bureau projects the country's population will reach 404.5 million by 2060 — a 23 percent increase in just four decades. However, under a zero net migration policy, the population would stabilize at 329 million in 2060.

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If nothing changes, the U.S. Census Bureau projects the country's population will reach 404.5 million by 2060 — a 23 percent increase in just four decades. However, under a zero net migration policy, the population would stabilize at 329 million in 2060.

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step: 7 is america overpopulated?

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According to the Food and Agriculture Organization of the United Nations (2009a, 2009b) the world produces more than 1 1/2 times enough food to feed everyone on the planet. That's already enough to feed 10 billion people, the world's 2050 projected population peak.

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According to the Food and Agriculture Organization of the United Nations (2009a, 2009b) the world produces more than 1 1/2 times enough food to feed everyone on the planet. That's already enough to feed 10 billion people, the world's 2050 projected population peak.

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step 8: is there enough food?

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Make cards to promote nearby shelters. ...Donate clothes, especially socks. ...Volunteer your time. ...Fundraise. ...Research your local candidates. ...Participate in your city's Point-in-Time count. ...Remember youth homelessness.

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Make cards to promote nearby shelters. ...Donate clothes, especially socks. ...Volunteer your time. ...Fundraise. ...Research your local candidates. ...Participate in your city's Point-in-Time count. ...Remember youth homelessness.

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step 9: how do we help homeless?

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cites

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About Us - Institute of Global Homelessness

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cites

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The world's population aged 60 or above is growing at a rate of 3.26 percent per year. By 2050, all major areas of the world except Africa will have nearly a quarter or more of their populations aged 60 or over.

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cites

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Human overpopulation (or human population overshoot) is the concept of a human population becoming too large to be sustained by its environment or resources in the long term. The idea is usually discussed in the context of world population, though it may also concern regions. Human population growth has increased in recent centuries due to medical advancements and improved agricultural productivity. Those concerned by this trend argue that it results in a level of resource consumption which exceeds the environment's carrying capacity, leading to population overshoot. The concept is often discussed in relation to other population concerns such as demographic push and depopulation, as well as in relation to resource depletion and the human impact on the environment.

Discussions of overpopulation follow a similar line of inquiry as Malthusianism and its Malthusian catastrophe, a hypothetical event where population exceeds agricultural capacity, causing famine or war over resources, resulting in poverty and depopulation.

Recent discussion of overpopulation was popularized by Paul Ehrlich in his 1968 book The Population Bomb. Ehrlich described overpopulation as a function of overconsumption, arguing that overpopulation should be defined by a population being unable to sustain itself without depleting non-renewable resources. Modern proponents of the concept have suggested that overpopulation, population growth and overconsumption are interdependent and collectively are the primary drivers of human-caused environmental issues such as climate change and biodiversity loss, and other societal problems. Advocates wanting to mitigate these proposed impacts advocate population planning strategies to reach what some consider a sustainable population.

The concept of overpopulation is controversial, with many parts of the environmental movement and academic communities disputing its premise. Some demographic projections suggest that population growth will stabilise in the 21st century, and many experts believe that global resources can meet this increased demand, suggesting that a global overpopulation scenario would be unlikely. Other critics highlight how attempts to blame environmental issues on overpopulation tend to oversimplify complex social or economic systems, or place blame on developing countries and poor populations- reinscribing colonial or racist assumptions. For these reasons, critics of overpopulation suggest overconsumption be treated as an issue separate from population growth.

World population has been rising continuously since the end of the Black Death, around the year 1350. The fastest doubling of the world population happened between 1950 and 1986: a doubling from 2.5 to 5 billion people in just 37 years, mainly due to medical advancements and increases in agricultural productivity. Due to its dramatic impact on the human ability to grow food, the Haber process enabled the global population to increase from 1.6 billion in 1900 to 7.7 billion by November 2018.

Some researchers analyze this growth in population like other animal populations, human populations predictably grow and shrink according to their available food supply as per the Lotka-Volterra equations, including agronomist and insect ecologist David Pimentel, behavioral scientist Russell Hopfenberg, and anthropologist Virginia Abernethy.

World population has gone through a number of periods of growth since the dawn of civilization in the Holocene period, around 10,000 BCE. The beginning of civilization roughly coincides with the receding of glacial ice following the end of the last glacial period. Farming allowed for the growth of populations in many parts of the world, including Europe, the Americas and China through the 1600s, occasionally disrupted by plagues or other crisis. For example, the Black Death is thought to have reduced the world's population, then at an estimated 450 million, to between 350 and 375 million by 1400.

After the start of the Industrial Revolution, during the 18th century, the rate of population growth began to increase. By the end of the century, the world's population was estimated at just under 1 billion. At the turn of the 20th century, the world's population was roughly 1.6 billion. Dramatic growth beginning in 1950 (above 1.8% per year) coincided with greatly increased food production as a result of the industrialization of agriculture brought about by the Green Revolution. The rate of human population growth peaked in 1964, at about 2.1% per year. By 1940, this figure had increased to 2.3 billion. Each subsequent addition of a billion humans took less and less time: 33 years to reach three billion in 1960, 14 years for four billion in 1974, 13 years for five billion in 1987, and 12 years for six billion in 1999.

On 14 May 2018, the United States Census Bureau calculated the world population as 7,472,985,269 for that same date and the United Nations estimated over 7 billion. In 2017, the United Nations increased the medium variant projections to 9.8 billion for 2050 and 11.2 billion for 2100. The UN population forecast of 2017 was predicting "near end of high fertility" globally and anticipating that by 2030 over two-thirds of the world population will be living in countries with fertility below the replacement level and for total world population to stabilize between 10 and 12 billion people by the year 2100.

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Concerns about population size or density have a long history: Tertullian, a resident of the city of Carthage in the second century CE, criticized population at the time, saying "Our numbers are burdensome to the world, which can hardly support us... In very deed, pestilence, and famine, and wars, and earthquakes have to be regarded as a remedy for nations, as the means of pruning the luxuriance of the human race." Despite these concerns, scholars have not found historic societies which have collapsed because of overpopulation or overconsumption.

By the beginning of the 19th century, intellectuals such as Thomas Malthus predicted that humankind would outgrow its available resources because a finite amount of land would be incapable of supporting a population with limitless potential for increase. During the 19th century, Malthus' work, particularly An Essay on the Principle of Population, was often interpreted in a way that blamed the poor alone for their condition and helping them was said to worsen conditions in the long run. This resulted, for example, in the English poor laws of 1834 and a hesitating response to the Irish Great Famine of 1845-52.

The first World Population Conference was held in 1927 in Geneva, organised by the League of Nations and Margaret Sanger.

Paul R. Ehrlich's book The Population Bomb became a bestseller upon its release in 1968, creating renewed interest in overpopulation. The book predicted population growth would lead to famine, societal collapse, and other social, environmental and economic strife in the coming decades, and advocated for policies to curb it. The Club of Rome published the influential report The Limits to Growth in 1972, which used computer modelling to similarly argue that continued population growth trends would lead to global system collapse. The idea of overpopulation was also a topic of some works of English-language science fiction and dystopian fiction during the latter part of the 1960s. The United Nations held the first of three World Population Conferences in 1974. Human population and family planning policies were adopted by some nations in the late 20th century in an effort to curb population growth, including in China and India. Albert Allen Bartlett gave more than 1,742 lectures on the threat of exponential population growth starting in 1969.

However, many predictions of overpopulation during the 20th century did not materialise. In The Population Bomb, Elrich stated that "[i]n the 1970s hundreds of millions of people will starve to death in spite of any crash programs embarked upon now," with later editions changing to instead be "in the 1980s". Despite admitting some of his earlier predictions did not come to pass, Ehlrich continues to advocate that overpopulation is a major issue.

As the profile of environmental issues facing humanity increased during the end of the 20th and early 21st centuries, some have looked to population growth as a root cause. A 2015 survey from Pew Research Center reports that 82% of scientists associated with the American Association for the Advancement of Science were concerned about population growth. In 2017, more than one-third of 50 Nobel prize-winning scientists surveyed by the Times Higher Education at the Lindau Nobel Laureate Meetings said that human overpopulation and environmental degradation are the two greatest threats facing mankind. In November that same year, the World Scientists' Warning to Humanity: A Second Notice, signed by 15,364 scientists from 184 countries, indicated that rapid human population growth is "a primary driver behind many ecological and even societal threats." Ehlrich and other scientists at a conference in the Vatican on contemporary species extinction linked the issue to population growth in 2017, and advocated for human population control, which attracted controversy from the Catholic church. In 2019, a warning on climate change signed by 11,000 scientists from 153 nations said that human population growth adds 80 million humans annually, and "the world population must be stabilized-and, ideally, gradually reduced-within a framework that ensures social integrity" to reduce the impact of "population growth on GHG emissions and biodiversity loss."

According to writer and journalist Krithika Varagur, myths and misinformation about overpopulation of Rohingya people in Myanmar is thought to have driven their persecution in the 2010s. The Indian government of Narendra Modi introduced population policies in the 21st century, including offering incentives for sterilization, citing the risks of a "population explosion", although demographers have criticised this basis, with India thought to be undergoing demographic transition and its fertility rate falling. The policies have also received criticism from human and women's rights groups.

In 2020, a quote from David Attenborough about how humans have "overrun the planet" was shared widely online, becoming his most popular comment on the internet.

Population concern organizations have promoted the conversation in academic and policy circles. Organizations focused on population stabilization and population concern often focus on the policy of particular governments, or particular solutions to overpopulation. Some of these organizations are popular or visible because of their association with major public figures, such as Population Matters' connection with David Attenborough, while others are more closely associated with particular academic interpretations or solutions.[citation needed ]

Biologists and sociologists have discussed overpopulation as a threat to the quality of human life. Some environmentalists, such as Pentti Linkola, have argued human overpopulation represents a threat to Earth's biosphere.

Poverty, and infant and child mortality

Although proponents of human overpopulation have expressed concern that growing population will lead to an increase in global poverty and infant mortality, both indicators have declined over the last 200 years of population growth.

A number of scientists have argued that human impacts on the environment and accompanying increase in resource consumption threatens the world's ecosystems and the survival of human civilization. The InterAcademy Panel Statement on Population Growth, which was ratified by 58 member national academies in 1994, states that "unprecedented" population growth aggravates many environmental problems, including rising levels of atmospheric carbon dioxide, global warming, and pollution. Indeed, some analysts claim that overpopulation's most serious impact is its effect on the environment. Some scientists suggest that the overall human impact on the environment during the Great Acceleration, particularly due to human population size and growth, economic growth, overconsumption, pollution, and proliferation of technology, has pushed the planet into a new geological epoch known as the Anthropocene.

Some studies and commentary link population growth with climate change. Critics have stated that population growth alone may have less influence on climate change than other factors, such as greenhouse gas emissions per capita. The global consumption of meat is projected to rise by as much as 76% by 2050 as the global population increases, with this projected to have further environmental impacts such as biodiversity loss and increased greenhouse gas emissions. A July 2017 study published in Environmental Research Letters argued that the most significant way individuals could mitigate their own carbon footprint is to have fewer children, followed by living without a vehicle, forgoing air travel, and adopting a plant-based diet. However, even in countries which have both large population growth and major ecological problems, it is not necessarily true that curbing the population growth will make a major contribution towards resolving all environmental problems that can be solved simply with an environmentalist policy approach.

Continued population growth and overconsumption, particularly by the wealthy, have been posited as key drivers of biodiversity loss and contemporary species extinction, with some researchers and environmentalists specifically suggesting this indicates a human overpopulation scenario. The Global Assessment Report on Biodiversity and Ecosystem Services, released by IPBES in 2019, states that human population growth is a factor in biodiversity loss.

Some prominent scientists and environmentalists, including Jared Diamond, E. O. Wilson, Jane Goodall and David Attenborough, contend that population growth is devastating to biodiversity. Wilson for example, has expressed concern when Homo sapiens reached a population of six billion their biomass exceeded that of any other large land dwelling animal species that had ever existed by over 100 times.

Human overpopulation and continued population growth are also considered by some, including animal rights attorney Doris Lin and philosopher Steven Best, to be an animal rights issue, as more human activity means the destruction of animal habitats and more direct killing of animals.

Some commentary has attributed depletion of non-renewable resources, such as land, food and water, to overpopulation and suggested it could lead to a diminished quality of human life. Ecologist David Pimentel was one such proponent, saying "with the imbalance growing between population numbers and vital life sustaining resources, humans must actively conserve cropland, freshwater, energy, and biological resources. There is a need to develop renewable energy resources. Humans everywhere must understand that rapid population growth damages the Earth's resources and diminishes human well-being."

Although food shortages have been warned as a consequence of overpopulation, according to the Food and Agriculture Organization, global food production exceeds increasing demand from global population growth. Food insecurity in some regions is attributable to the globally unequal distribution of food supplies.

Some proponents of overpopulation[who? ] warn expansion of agricultural production to meet population growth is likely to have a substantial impact on the environment, and have expressed concern at usable land area becoming limited. The notion that space is limited has been decried by skeptics, who point out that the Earth's population of roughly 6.8 billion people could comfortably be housed an area comparable in size to the state of Texas in the United States (about 269,000 square miles or 696,706.80 square kilometres). Critics and agricultural experts suggest changes to policies relating to land use or agriculture to make them more efficient would be more likely to resolve land issues and pressures on the environment than focusing on reducing population alone.

Water scarcity, which threatens agricultural productivity, represents a global issue that some have linked to population growth. However, water is not scarce on a global scale, and water issues in many developing countries are related to various local issues and not necessarily population.

It was speculated by Aldous Huxley in 1958 that democracy is threatened by overpopulation, and could give rise to totalitarian style governments. Physics professor Albert Allen Bartlett at the University of Colorado Boulder warned in 2000 that overpopulation and the development of technology are the two major causes of the diminution of democracy. However, over the last 200 years of population growth, the actual level of personal freedom has increased rather than declined. John Harte has argued population growth is a factor in numerous social issues, including unemployment, overcrowding, bad governance and decaying infrastructure. Daron Acemoglu and others suggested in a 2017 paper that since the Second World War, countries with higher population growth rates experienced the most social conflict.

According to anthropologist Jason Hickel, the global capitalist system creates pressures for population growth: "more people means more labour, cheaper labour, and more consumers."

A 2021 article in Ethics, Medicine and Public Health argued in light of the COVID-19 pandemic that epidemics and pandemics were made more likely by overpopulation, globalization, urbanization and encroachment into natural habitats.

Some groups (for example, the World Wide Fund for Nature (WWF) and Global Footprint Network) have stated that the yearly biocapacity of Earth is being exceeded as measured using the ecological footprint. In 2006, WWF's Living Planet Report stated that in order for all humans to live with the current consumption patterns of Europeans, we would be spending three times more than what the planet can renew. According to these calculations, humanity as a whole was using by 2006 40% more than what Earth can regenerate. Another study by the WWF in 2014 found that it would take the equivalent of 1.5 Earths of biocapacity to meet humanity's current levels of consumption. However, Roger Martin of Population Matters states the view: "the poor want to get rich, and I want them to get rich," with a later addition, "of course we have to change consumption habits,... but we've also got to stabilise our numbers".

Critics have questioned the simplifications and statistical methods used in calculating ecological footprints. Therefore, Global Footprint Network and its partner organizations have engaged with national governments and international agencies to test the results-reviews have been produced by France, Germany, the European Commission, Switzerland, Luxembourg, Japan and the United Arab Emirates. Some point out that a more refined method of assessing Ecological Footprint is to designate sustainable versus non-sustainable categories of consumption.

Many attempts have been made to estimate the world's carrying capacity for humans; the maximum population the world can host. A 2004 meta-analysis of 69 such studies from 1694 until 2001 found the average predicted maximum number of people the Earth would ever have was 7.7 billion people, with lower and upper meta-bounds at 0.65 and 98 billion people, respectively. They conclude: "recent predictions of stabilized world population levels for 2050 exceed several of our meta-estimates of a world population limit".

A 2012 United Nations report summarized 65 different estimated maximum sustainable population sizes and the most common estimate was 8 billion. Advocates of reduced population often put forward much lower numbers. Paul R. Ehrlich stated in 2018 that the optimum population is between 1.5 and 2 billion. Geographer Chris Tucker estimates that 3 billion is a sustainable number.

Critics of overpopulation criticize the basic assumptions associated with these estimates. For example, Jade Sasser believes that calculating a maximum of number of humanity is unethical while only some, mostly privileged European former colonial powers, are mostly responsible for unsustainably using up Earth's resources.

Several strategies have been proposed to mitigate overpopulation.

Several scientists (including Paul Ehrlich, Gretchen Daily and Tim Flannery) proposed that humanity should work at stabilizing its absolute numbers, as a starting point towards beginning the process of reducing the total numbers. They suggested several possible approaches, including:

Some scientists including Corey Bradshaw and Barry Brook suggest that, given the "inexorable demographic momentum of the global human population," sustainability can be achieved more rapidly with a short term focus on technological and social innovations, along with reducing consumption rates, while treating population planning as a long term goal.

Family planning

Education and empowerment of women and giving access to family planning and contraception have a demonstrated impact on reducing birthrates. Many studies conclude that educating girls reduces the number of children they have. One option according to some activists is to focus on education about family planning and birth control methods, and to make birth-control devices like condoms, contraceptive pills and intrauterine devices easily available. Worldwide, nearly 40% of pregnancies are unintended (some 80 million unintended pregnancies each year). An estimated 350 million women in the poorest countries of the world either did not want their last child, do not want another child or want to space their pregnancies, but they lack access to information, affordable means and services to determine the size and spacing of their families[when? ]. In the developing world, some 514,000 women die annually of complications from pregnancy and abortion, with 86% of these deaths occurring in the sub-Saharan Africa region and South Asia. Additionally, 8 million infants die, many because of malnutrition or preventable diseases, especially from lack of access to clean drinking water.

Women's rights and their reproductive rights in particular are issues regarded to have vital importance in the debate. Anthropologist Jason Hickel asserts that a nation's population growth rapidly declines - even within a single generation - when policies relating to women's health and reproductive rights, children's health (to ensure parents they will survive to adulthood), and expanding education and economic opportunities for girls and women are implemented. This incentive, however, has been questioned by Rosalind P. Petchesky. Citing her attendance of the 1994 Cairo conference, she reported that overpopulation and birth control were being diverted by feminists into women's rights issues, mostly downplaying the overpopulation issue as only one minor matter of many others. Upon her observation, she argued this was forging many faults and distractions on the main problem of human overpopulation and how to solve it[undue weight? ].

A 2020 paper by William J. Ripple and other scientists argued in favor of population policies that could advance social justice (such as by abolishing child marriage, expanding family planning services and reforms that improve education for women and girls) and at the same time mitigate the impact of population growth on climate change and biodiversity loss.

Coercive population control policies

Ehrlich advocated in The Population Bomb that "various forms of coercion", such as removing tax benefits for having additional children, be used in cases when voluntary population planning policies fail. Some nations, like China, have used strict or coercive measures such as the one-child policy to reduce birth rates. Compulsory sterilization has also been implemented in many countries as a form of population control.

Another choice-based approach is financial compensation or other benefits by the state offered to people who voluntarily undergo sterilization. Such policies have been introduced by the government of India.

Despite the increase in population density within cities (and the emergence of megacities), UN Habitat Data Corp. states in its reports that urbanization may be the best compromise in the face of global population growth. Cities concentrate human activity within limited areas, limiting the breadth of environmental damage. UN Habitat says this is only possible if urban planning is significantly improved.

Paul Ehrlich pointed out in his book The Population Bomb (1968) that rhetoric supporting the increase of city density is a means of avoiding dealing with the actual problem of overpopulation, and rather than treating the increase of city density as a symptom of the root problem, it has been promoted by the same interests that have profited from population increase (e.g. property developers, the banking system which invests in property development, industry, municipal councils). Subsequent authors point to growth economics as driving governments seek city growth and expansion at any cost, disregarding the impact it might have on the environment.

The concept of human overpopulation, and its attribution as a cause of environmental issues, are controversial.

Some critics, including Joel E. Cohen, Nicholas Eberstadt, Fred Pearce, Dominic Lawson and Betsy Hartmann, refer to overpopulation as a myth. Predicted exponential population growth or any "population explosion" did not materialise; instead, population growth slowed. Critics suggest that enough resources are available to support projected population growth, and that human impacts on the environment are not attributable to overpopulation.

According to libertarian think tank the Fraser Institute, both the idea of overpopulation and the alleged depletion of resources are myths; most resources are now more abundant than a few decades ago, thanks to technological progress. The Institute also questions the sincerity of advocates of population control in poor countries.

Demographer Nicholas Eberstadt has criticised the idea of overpopulation, saying that "overpopulation is not really overpopulation. It is a question of poverty".

A 2020 study in concluded that "continued trends in female educational attainment and access to contraception will hasten declines in fertility and slow population growth", with projections suggesting world population would peak at 9.73 billion in 2064 and fall by 2100. Media commentary interpreted this as suggesting overconsumption represents a greater environmental threat as an overpopulation scenario may never occur.

Some human population planning strategies advocated by proponents of overpopulation are controversial for ethical reasons. Those concerned with overpopulation, including Paul Ehrlich, have been accused of influencing human rights abuses including forced sterilisation policies in India and under China's one-child policy, as well as mandatory or coercive birth control measures taken in other countries.

Women's rights

Influential advocates such as Betsy Hartmann consider the "myth of overpopulation" to be destructive as it "prevents constructive thinking and action on reproductive rights," which acutely effects women and communities of women in poverty. The 1994 International Conference on Population and Development (ICPD) define reproductive rights as "the basic right of all couples and individuals to decide freely and responsibly the number, spacing, and timing of their children and to have the information to do so." This oversimplification of human overpopulation leads individuals to believe there are simple solutions and the creation of population policies that limit reproductive rights.

The argument of overpopulation has been criticized by some scholars and environmentalists as being racist and having roots in colonialism and white supremacy, since control and reduction of human population is often focused on the global south, instead of on overconsumption and the global north, where it occurs. Paul Ehrlich's Population Bomb begins with him describing first knowing the "feel of overpopulation" from a visit to Delhi, which some critics have accused of having racial undertones. George Monbiot has said "when affluent white people wrongly transfer the blame for their environmental impacts on to the birthrate of much poorer brown and black people, their finger-pointing reinforces [ Great Replacement and white genocide conspiracy] narratives. It is inherently racist." Overpopulation is said to be a common component of ecofascist ideology.

Scholar Heather Alberro argues to reject the overpopulation argument, stating that the human population growth is rapidly slowing down, the underlying problem is not the number of people, but how resources are distributed and that the idea of overpopulation could fuel a racist backlash against the population of poor countries.

Matthew Connelly, Fatal Misconception: The Struggle to Control World Population. Harvard University Press, 2010. ISBN 9780674034600

David Foreman, Man Swarm: How Overpopulation is Killing the Wild World. Livetrue Books, 2015. ISBN 978-0986383205

Karen Shragg, Move Upstream: A Call to Solve Overpopulation. ISBN 978-0988493834 (published November 2015). Discussion of the book by the author, March 2017 (video, 91 minutes).

Alan Weisman. Countdown: Our Last, Best Hope for a Future on Earth? Little, Brown and Company, (2013) ISBN 0316097756

Thomas Robertson, The Malthusian Moment: Global Population Growth and the Birth of American Environmentalism (2012), Rutgers University Press

J.R. McNeill, Peter Engelke, The Great Acceleration: An Environmental History of the Anthropocene since 1945 (2016)

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Human overpopulation (or human population overshoot) is the concept of a human population becoming too large to be sustained by its environment or resources in the long term. The idea is usually discussed in the context of world population, though it may also concern regions.