Map of countries by population density (See List of countries by population density. In Political geography and International politics, a country is a Political division of a geographical entity Population density (in agriculture standing stock and Standing crop) is a measurement of Population per unit area or unit volume List of countries and dependencies by Population density in inhabitants/km² )

Areas of high population densities, calculated in 1994.

Map of countries and territories by fertility rate (See List of countries and territories by fertility rate. The total fertility rate ( TFR, sometimes also called the fertility rate, period total fertility rate (PTFR or total This page consists of two tables Table 1 is sourced from the CIA World Factbook''' )

Overpopulation refers to when an organism's numbers exceed the carrying capacity of its habitat. The supportable Population of an Organism, given the food habitat, water and other necessities available within an environment is known as the environment's A habitat (which is Latin for "it inhabits" is an Ecological or environmental area that is inhabited by a particular Species. In common parlance, the term usually refers to the relationship between the human population and its environment, the earth. The world population is the total number of living Humans on Earth at a given time See also Nature The natural environment, commonly referred to simply as the environment, is a terminology that is comprised of all living and EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 ^[1]

Overpopulation is not solely a function of the size or density of the population. Overpopulation can be determined using the ratio of population to available sustainable resources. If a given environment has a population of ten, but there is food or drinking water enough for only nine, then that environment is overpopulated; if the population is 100 individuals but there is enough food, shelter, and water for 200 for the indefinite future, then it is not. Overpopulation can result from an increase in births, a decline in mortality rates due to medical advances, from an increase in immigration, a decrease in emigration, or from an unsustainable biome and depletion of resources. This page consists of two tables Table 1 is sourced from the CIA World Factbook''' Mortality rate is a measure of the number of Deaths (in general or due to a specific cause in some population scaled to the size of that population per unit time All human societies have medical beliefs that provide explanations for birth, Death, and Disease. Immigration refers to the movement of people among countries While the movement of people has existed throughout human history at various levels modern immigration implies long-term "Emigrant" redirects here For the Butterflies, see Catopsilia. Sustainability, in a general sense is the capacity to maintain a certain process or state indefinitely A biome is a climatically and geographically defined area of ecologically similar climatic conditions such as communities of Plants Animals and It is possible for very sparsely-populated areas to be overpopulated, as the area in question may have a very meager or non-existent capability to sustain human life (e. g. the middle of the Sahara desert or Antarctica). The Sahara (الصحراء الكبرى aṣ-ṣaḥrā´ al-kubra, "The Great Desert" is the world's largest hot Desert and the world's second largest

The resources to be considered when evaluating whether an ecological niche is overpopulated include clean water, clean air, food, shelter, warmth, and other resources necessary to sustain life. Ecology (from Greek grc οἶκος oikos, "house(hold" and grc -λογία -logia) is the scientific study of Water of sufficient quality to serve as drinking water is termed potable water whether it is used for drinking or not If the quality of human life is addressed as well, there are then additional resources to be considered, such as medical care, employment, money, education, fuel, electricity, proper sewage treatment, waste. WASTE is a Peer-to-peer and Friend-to-friend protocol and software application developed by Justin Frankel at Nullsoft in 2003 that features

Some countries have managed to increase their carrying capacity by using technologies such as agriculture and desalination. The supportable Population of an Organism, given the food habitat, water and other necessities available within an environment is known as the environment's Agriculture refers to the production of goods through the growing of plants and fungi and the raising of domesticated Animals The study of agriculture Desalination, desalinization, or desalinisation refers to any of several processes that remove excess salt and other Minerals from Water Some have argued that poverty and famine are caused by bad government and bad economic policies, and that higher population density leads to more specialization and technological innovation, and that this leads to a higher standard of living. The term innovation means a new way of doing something It may refer to incremental radical and revolutionary changes in thinking products processes or organisations ^{[2][3][4][5][6][7][8]} Others argue that overpopulation is an important cause of these problems. ^{[9][10][11][12]}

Overpopulation predictions

In An Essay on the Principle of Population (first published in 1798), Thomas Malthus proposed that while resources tend to grow linearly, population grows exponentially. The book An Essay on the Principle of Population was first published anonymously in 1798 through J Thomas Robert Malthus FRS (13 February 1766 – 23 December 1834 was an English political economist and demographer who expressed views Exponential growth (including Exponential decay) occurs when the growth rate of a mathematical function is proportional to the function's current value He argued that, if left unrestricted, human populations continue to grow until they become too large to be supported by the food grown on available agricultural land, causing starvation which then controls population growth. He noted that this had happened many times previously in human history and estimated that this would occur again by the middle of the 19th century. To avoid this outcome, Malthus argued for population control through "moral restraint. Population control is the practice of limiting population increase usually by reducing the Birth rate. " He correctly predicted that population growth could decline or reverse with later marriages and "vices" like contraception (see for example, the demographic transition). The Demographic transition model (DTM is a model used to explain the process of shift from high Birth rates and high Death rates to low birth rates and low death rates The warnings and predictions of Malthus are commonly referred to as the Malthusian catastrophe. A Malthusian catastrophe (or Malthusian check, crisis, dilemma, disaster, trap, controls, or limit) is a return

On a global scale, since the industrial revolution, food production has sometimes grown faster than human population. However, it has been argued that other changes impacting Earth's ability to function as a suitable habitat for human beings, such as global warming, desertification, overfishing, peak oil, soil degradation, deforestation, aquifer depletion and other environmental problems caused by industrialization, will significantly reduce food production or factors necessary for well-being. Global warming is the increase in the average measured temperature of the Desertification is the degradation of land in arid and dry sub-humid areas resulting primarily from human activities and influenced by climatic variations Overfishing occurs when Fishing activities reduce fish stocks below an acceptable level Soils retrogression and degradation in the French school of pedology are two regressive evolution processes associated with the loss of equilibrium of a stable Soil Deforestation is the conversion of Forested areas to non-forest land for use such as Arable land, Pasture, urban use logged area or wasteland An aquifer is an underground layer of Water -bearing Permeable rock or unconsolidated materials ( Gravel, Sand, Silt, or Clay Given recent population growth, this may cause a Malthusian catastrophe.

Among the earlier best-known modern examples of such arguments are The Limits to Growth (1972) and The Population Bomb (1968) by Paul R. Ehrlich. Limits to Growth is a 1972 book modeling the consequences of a rapidly growing World population and finite resource supplies commissioned by the The Population Bomb (1968 is a book written by Paul R Ehrlich. Paul Ralph Ehrlich (born May 29 1932 in Philadelphia Pennsylvania) is a renowned Entomologist specializing in Lepidoptera (butterflies

Paul Ehrlich predicted, "the population of the U. S. will shrink from 250 million to about 22. 5 million before 1999 because of famine and global warming", though it should be noted that between 1950 and 1984, as the Green Revolution transformed agriculture around the globe, world grain production increased by 250%,^[13] and the source of his quote, a 1969 short story called "Eco-catastrophe" reprinted from "Ramparts" Magazine, was apparently a work of science fiction. The Green Revolution refers to the transformation of Agriculture that began in 1945 at the request of the Mexican government to establish an agricultural research station to Agriculture refers to the production of goods through the growing of plants and fungi and the raising of domesticated Animals The study of agriculture ^[14] Ehrlich also predicted, "Before 1985, mankind will enter a genuine age of scarcity . . . in which the accessible supplies of many key minerals will be facing depletion. " According to The Skeptical Environmentalist by Bjørn Lomborg, Ehrlich's predictions did not materialise. The Skeptical Environmentalist Measuring the Real State of the World ( Danish: Verdens Sande Tilstand, literal translation The Real State of Bjørn Lomborg (born January 6, 1965) is a Danish author academic and environmentalist ^[15] (See Erlich's answer to his critics and The Ultimate Resource, by Julian Simon, which challenges Ehrlich's ideas. The Population Bomb (1968 is a book written by Paul R Ehrlich. The Ultimate Resource is a 1981 book written by Julian Lincoln Simon challenging the notion that humanity was running out of Natural resources It was revised Julian Simon can be refer to Julian Lincoln Simon (1932-1998 American economist Julián Simón (born 1987 Spanish motorcycle racer ) Simon himself once stated "We now have in our hands in our libraries, really the technology to feed, clothe, and supply energy to an ever-growing population for the next 7 billion years. . . We [are] able to go on increasing forever" (Myers and Simon, 1994, 65). These comments have subjected Simon himself to criticism. ^[16]

In Facing the Limits to Growth the authors of the 1972 study Limits to Growth tell of the difficulty in getting the idea of the necessity of limiting human population growth past "Entrenched political, economic, and religious cliques. Limits to Growth is a 1972 book modeling the consequences of a rapidly growing World population and finite resource supplies commissioned by the " And they acknowledge that revision has been necessary, "Because of the long time horizon involved in our studies, we always realized it would require several decades to get any perspective on the accuracy of our forecasts", however, "the basic conclusions are still the same. We have modified our model only a little to reflect some better data about the effects of technology on land yields and birth rates. "^[17]

Between 1950 and 1984, as the Green Revolution transformed agriculture around the globe, world grain production increased by 250%. The Green Revolution refers to the transformation of Agriculture that began in 1945 at the request of the Mexican government to establish an agricultural research station to However, agricultural productivity has declined in many world regions in the past ten to 20 years due to overdrafting of groundwater (such as has occurred on the North Plain of China) , overgrazing, extensive slash-and-burn and resulting soil exhaustion and erosion. Overdrafting is the process of extracting Groundwater beyond the safe yield or equilibrium yield of the Aquifer. Groundwater is Water located beneath the Ground surface in Soil pore spaces and in the Fractures of lithologic formations Overgrazing occurs when plants are exposed to Livestock Grazing for extended periods of time or without sufficient recovery periods Slash and burn consists of cutting and burning of Forests or Woodlands to create fields for Agriculture or Pasture for Livestock, or The energy for the Green Revolution was provided by fossil fuels in the form of fertilizers (natural gas), pesticides (oil), and hydrocarbon fueled irrigation. Fertilizers ( also spelt fertiliser are chemical compounds given to Plants to promote growth they are usually applied either through the soil for uptake by plant A pesticide is a substance or mixture of substances used to kill a pest. In Organic chemistry, a hydrocarbon is an Organic compound consisting entirely of Hydrogen and Carbon. Irrigation is an artificial application of water to the soil usually for assisting in growing crops ^[18] David Pimentel, professor of ecology and agriculture at Cornell University, and Mario Giampietro, senior researcher at the National Research Institute on Food and Nutrition (INRAN), place in their study Food, Land, Population and the U. Agriculture refers to the production of goods through the growing of plants and fungi and the raising of domesticated Animals The study of agriculture S. Economy the maximum U.S. population for a sustainable economy at 200 million. The United States is an urbanized nation with 808 percent of its population of 305186613 residing in cities and suburbs as of mid-year 2005 Sustainability, in a general sense is the capacity to maintain a certain process or state indefinitely To achieve a sustainable economy and avert disaster, the United States must reduce its population by at least one-third, and world population will have to be reduced by two-thirds, says the study. A disaster is the impact of a natural or human-made hazard that negatively affects society or environment. The United States of America —commonly referred to as the The world population is the total number of living Humans on Earth at a given time The authors of this study believe that the mentioned agricultural crisis will only begin to impact us after 2020, and will not become critical until 2050. ^[19]

David Pimentel claims that population outcomes for the 22nd century range from 2 billion people (characterised as thriving in harmony with the environment), to 12 billion people (characterised as miserable and suffering difficult lives with limited resources and widespread famine). ^[20]

The oncoming peaking of global oil production (and subsequent decline of production), along with the peak of North American natural gas production may precipitate this agricultural crisis much sooner than expected. Natural gas is a Gaseous Fossil fuel consisting primarily of Methane but including significant quantities of Ethane, Propane, Geologist Dale Allen Pfeiffer claims that coming decades could see spiraling food prices without relief and massive starvation on a global level such as never experienced before. Dale Allen Pfeiffer is a geologist from Michigan, US who has recently been investigating and writing about Hubbert Peak theory and the specter Food is any substance usually composed primarily of Carbohydrates Fats water and/or Proteins that can be eaten or drunk by an Starvation (also called inanition) is a severe reduction in Vitamin, Nutrient, and Energy intake and is the most extreme form of ^[21][22][23]

The book The Little Green Handbook reasons that in 2050 about 7. 7 billion people would be expected to suffer from illness, lack of adequate sanitation, hunger, and extreme poverty,^[9] provided that the high population estimates of year 2050 are realised.

In his recent book Collapse (2005), Jared Diamond argues that many earlier civilizations have collapsed due to environmental problems, and warns of current environmental problems. Collapse How Societies Choose to Fail or Succeed is a 2005 book by Jared M TemplateInfobox writer --> Jared Mason Diamond (b 10 September, 1937) is an American Evolutionary biologist For example, he argues that it was overpopulation that led the now recovering inhabitants of Easter Island (a. k. a. Rapa Nui) to destroy their once beautiful island paradise.

However, he also notes situations in which humans have managed their natural resources well.

Optimistic views on population

In The Skeptical Environmentalist, Bjørn Lomborg argues that, because of the falling rate of population growth in some parts of the world and because of new science and technologies, there is little problem with overpopulation. The Skeptical Environmentalist Measuring the Real State of the World ( Danish: Verdens Sande Tilstand, literal translation The Real State of Bjørn Lomborg (born January 6, 1965) is a Danish author academic and environmentalist Several rebuttals^[25] of these arguments incited an equally defensive response by Lomborg. ^[26]

Julian Simon predicted that any poor country that chose to adopt property rights, science, technology, industrialization, modern agriculture, hydroponic farming, nuclear power, and desalination, would achieve a rich, first world standard of living, even if the Earth had tens of billions of people. Julian Simon can be refer to Julian Lincoln Simon (1932-1998 American economist Julián Simón (born 1987 Spanish motorcycle racer Hydroponics (from the Greek words hydro (water and ponos (labour is a method of growing Plants using mineral Nutrient solutions without ^[27]

Similarly, in his 2007 book The Improving State of the World, Indur M. The Improving State of the World Why We're Living Longer Healthier More Comfortable Lives On a Cleaner Planet is a 2007 book by Indur M Goklany argues that there is little problem with overpopulation, as humanity's state is rapidly improving overall and environmental problems can be overcome. It proposes that in the early stages of economic and technological development, negative environmental impacts increase because securing access to such necessities as food, shelter, and energy is seen as more important than protecting the environment. As development continues and these supply problems are solved, environmental impact becomes a higher priority, and steps are then taken to reduce it. This pattern can be seen for many environmental indicators, such as air quality, availability of safe water, sanitation, and toxic residues (e. g. , DDT and PCBs) in human tissues, which initially declined with increasing development but have more recently improved. DDT (from its trivial name D ichloro- D iphenyl- T richloroethane is one of the best known synthetic Pesticides It is a chemical with a long Polychlorinated biphenyls ( PCB s are a class of Organic compounds with 1 to 10 Chlorine atoms attached to Biphenyl which is a molecule composed

However, far from being the natural outcome of free markets that Goklany postulates, James Surowiecki argues in his review of the book that "The reality . James Michael Surowiecki ("soo-ro-wiki" (b 1967 is an American Journalist. . . is that the fight over environmental regulation, at least in the United States, was -- and remains -- a fierce one and that environmental skeptics and businesses have done their best to prevent regulations such as the Clean Air and Clean Water Acts from ever becoming law. It is also the case that without those regulations, the 'cleaner planet' Goklany sees today would not exist. . . . The point is that far from being the inevitable product of a strong economy, environmental improvement is often the result of political struggles that could very easily have gone the other way. " Goklansy in a reply stated "I am no more convinced than he is about the inevitability of progress" and that the book had stated "a democratic society, because it has the political means to do so, will translate its desire for a cleaner environment into laws, either because cleanup is not voluntary or rapid enough, or because of sheer symbolism. The wealthier such a society, the more affordable -- and more demanding -- its laws. "[3]

Population growth

The demographic transition

United Nation's population projections by location.

Main article: Demographic transition

The theory of demographic transition, while unproven to apply to all world regions, holds that widespread empirical evidence shows that after the standard of living and life expectancy increases, family sizes start dropping. The Demographic transition model (DTM is a model used to explain the process of shift from high Birth rates and high Death rates to low birth rates and low death rates Factors cited in the decline of birth rates include such social factors as later ages of marriage, the growing desire of many women in such settings to seek careers outside of child rearing and domestic work, and the decreased need of children in industrialized settings. NOTICE TO WOULD-BE ROMEOS ************** Career is a term defined by the Oxford English Dictionary as an individual's "course or progress through life (or a distinct portion of life" is a process of social and economic change whereby a human group is transformed from a Pre-industrial society into an industrial one The latter factor stems from the fact that children perform a great deal of work in small-scale agricultural societies, and work less in industrial ones; it has been cited to explain the dropoff in birth rates worldwide in all industrializing regions. CHILD syndrome (or congenital hemidysplasia with ichthyosiform erythroderma and limb defects) is a genetic disorder Child labor is the employment of Children at regular and sustained labour

Another version of demographic transition is that of Virginia Abernethy in Population Politics, in which she claims that the demographic transition is primarily in effect for nations where women enjoy a special status (see Fertility-opportunity theory). Virginia Deane Abernethy (born 1934 is an American Professor (emerita of Psychiatry and Anthropology at Virginia Deane Abernethy (born 1934 is an American Professor (emerita of Psychiatry and Anthropology at In strongly patriarchal nations, where she claims women enjoy few special rights, a high standard of living tends to result in population growth. Population growth is the change in Population over time and can be quantified as the change in the number of individuals in a population using "per unit time" for She argues that foreign aid to poor countries must include significant components designed to improve the education, human rights, political rights, political power, and also to equalize the economic and sexual status and power of women. Gender equality (also known as gender equity, gender egalitarianism, or sexual equality) is the goal of the Equality of the Genders

Her theory runs counter to some of the available empirical evidence. For example Iran had a Total Fertility Rate of 1. The total fertility rate ( TFR, sometimes also called the fertility rate, period total fertility rate (PTFR or total 82 children per couple in 2005, which is below the replacement rate of 2. 1 to 2. 3 children per couple needed to maintain population. Iran is widely perceived as a patriarchal nation, and yet any population growth that occurred there came not from increased birth rates, but from decreased mortality rates, and therefore not from a lack of reproductive rights. Patriarchy is the structuring of Society on the basis of Family units where fathers have primary responsibility for the welfare of hence authority over Of course, many countries still have high population growth rates while having lower Total Fertility Rates. This is because high population growth in the past has skewed the age demographic in many countries toward a young age, meaning that the population will still rise as the more numerous younger generation approaches maturity.

"Demographic entrapment" is a concept developed by Maurice King that has not gained widespread acceptance. King argues that this occurs when a country has a population larger than its carrying capacity, no possibility of migration, and exports too little to be able to import food. This will cause starvation. He claims that for example many sub-Saharan nations are or will become stuck in demographic entrapment, instead of having a demographic transition. ^[28]

For the world as a whole, the number of children born per woman decreased from 5. This page consists of two tables Table 1 is sourced from the CIA World Factbook''' 02 to 2. 65 between 1950 and 2005. A breakdown by continent is as follows:

• Europe 2. 66 to 1. 41.
• North America 3. 47 to 1. 99.
• Oceania 3. 87 to 2. 30.
• Central America 6. 38 to 2. 66.
• South America 5. South America is a Continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a 75 to 2. 51.
• Asia (excluding Middle East) 5. 85 to 2. 43.
• Middle East & North Africa 6. The Middle East is a Subcontinent with no clear boundaries often used as a synonym to Near East, in opposition to Far East. North Africa or Northern Africa is the Northernmost Region of the African Continent, separated by the Sahara from Sub-Saharan 99 to 3. 37.
• Sub-Saharan Africa 6. Sub-Saharan Africa is a geographical term used to describe the area of the African continent which lies south of the Sahara, or those African countries 7 to 5. 53.

In 2050, the projected number of children born per woman is 2. 05. Only the Middle East & North Africa (2. 09) and Sub-Saharan Africa (2. 61) will then have numbers greater than 2. ^[29]

Population projections from the 1900s to 2050

United Nations reports, such as World Population Prospects state:

• World population is currently growing by approximately 75 million people per year. The world population is the total number of living Humans on Earth at a given time Net growth by mid-century is predicted by the United Nations' medium variant to be about 33 million per year. The high projection variant is 92 million, while the low is -13 million. And at the constant fertility variant (current rates) there would be 169 million people added each year by 2050, which would result in a total world population of about 11,858 million people.
• Almost all growth will take place in the less developed regions, where today’s 5. 3 billion population of underdeveloped countries is expected to increase to 7. 8 billion in 2050. By contrast, the population of the more developed regions will remain mostly unchanged, at 1. 2 billion. The world's population is expected to rise by 40% to 9. 1 billion.
• In 2000-2005, fertility at the world level stood at 2. 65 children per woman, about half the level it had in 1950-1955 (5 children per woman). In the medium variant, global fertility is projected to decline further to 2. 05 children per woman.
• During 2005-2050, nine countries are expected to account for half of the world’s projected population increase: India, Pakistan, Nigeria, Democratic Republic of the Congo, Bangladesh, Uganda, United States of America, Ethiopia, and China, listed according to the size of their contribution to population growth. India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country Pakistan () officially the Islamic Republic of Pakistan, is a country located in South Asia, Southwest Asia, Middle East and Nigeria, officially named the Federal Republic of Nigeria, is a federal Constitutional republic comprising thirty-six states and one Federal The Democratic Republic of the Congo (République démocratique du Congo often referred to as DR Congo, DRC or RDC, and formerly known or referred to ( Bengali: বাংলাদেশ inc-Latn Bangladesh) officially The Republic of Uganda is a Landlocked country in East Africa. The United States of America —commonly referred to as the NOTE This intro is the result of careful NPOV work Please do not make potentially controversial edits to it without first discussing on the talk page China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National
• Global life expectancy at birth, which is estimated to have risen from 46 years in 1950-1955 to 65 years in 2000-2005, is expected to keep rising to reach 75 years in 2045-2050. In the more developed regions, the projected increase is from 75 years today to 82 years by mid-century. Among the least developed countries, where life expectancy today is just under 50 years, it is expected to be 66 years in 2045-2050.
• The population of 51 countries or areas, including Germany, Italy, Japan and most of the successor States of the former Soviet Union, is expected to be lower in 2050 than in 2005. Germany, officially the Federal Republic of Germany ( ˈbʊndəsʁepuˌbliːk ˈdɔʏtʃlant is a Country in Central Europe. Italy (Italia officially the Italian Republic, (Repubblica Italiana is located on the Italian Peninsula in Southern Europe, and on the two largest For a topic outline on this subject see List of basic Japan topics. The post-Soviet states, also commonly known as former Soviet republics, are the 15 independent nations that split off from the Union of Soviet Socialist Republics
• During 2005-2050, the net number of international migrants to more developed regions is projected to be 98 million. Because deaths are projected to exceed births in the more developed regions by 73 million during 2005-2050, population growth in those regions will largely be due to international migration.
• In 2000-2005, net migration in 28 countries either prevented population decline or doubled at least the contribution of natural increase (births minus deaths) to population growth. Population decline is the reduction over time in a region's Census. These countries include Austria, Canada, Croatia, Denmark, Germany, Italy, Portugal, Qatar, Singapore, Spain, Sweden, United Arab Emirates and United Kingdom. ^[30]
• The updated United Nations figures project that the world population will reach 9. 2 billion around 2050. ^[31][32] This is the medium variant figure which assumes a decrease in average fertility from the present level of 2. 5 down to 2.
• Birth rates are now falling in many developing countries, while the actual populations in many developed countries would fall without immigration. This page consists of two tables Table 1 is sourced from the CIA World Factbook''' Developing countries are countries that haven't reached Western-style standards of democratic government free market economy industrialization social programs and human rights guaranties The term developed country, or advanced country, is used to categorize countries with developed Economies in which the tertiary and quaternary sectors Immigration refers to the movement of people among countries While the movement of people has existed throughout human history at various levels modern immigration implies long-term ^[33]
• By 2050 (Medium variant), India will have almost 1. India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country 7 billion people, China 1. China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National 4 billion, United States 400 million, Indonesia 297 million, Pakistan 292 million, Nigeria 289 million, Bangladesh 254 million, Brazil 254 million, Democratic Republic of the Congo 187 million, Ethiopia 183 million, Philippines 141 million, Mexico 132 million, Egypt 121 million, Vietnam 120 million, Russia 108 million, Japan 103 million, Iran 100 million, Turkey 99 million, Uganda 93 million, Tanzania 85 million, and Kenya 85 million. The United States of America —commonly referred to as the The Republic of Indonesia ( (Republik Indonesia is a Country in Southeast Asia. Pakistan () officially the Islamic Republic of Pakistan, is a country located in South Asia, Southwest Asia, Middle East and Nigeria, officially named the Federal Republic of Nigeria, is a federal Constitutional republic comprising thirty-six states and one Federal ( Bengali: বাংলাদেশ inc-Latn Bangladesh) officially |utc_offset = -2 to -4 |time_zone_DST = BRST |utc_offset_DST = -2 to -5 |cctld The Democratic Republic of the Congo (République démocratique du Congo often referred to as DR Congo, DRC or RDC, and formerly known or referred to NOTE This intro is the result of careful NPOV work Please do not make potentially controversial edits to it without first discussing on the talk page The Philippines ( Filipino: Pilipinas, officially known as the Republic of the Philippines (fil ''Republika ng Pilipinas'' RP The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. This article is about the country of Egypt For a topic outline on this subject see List of basic Egypt topics. Vietnam (ˌviːɛtˈnɑːm Việt Nam) officially Russia (Россия Rossiya) or the Russian Federation ( Rossiyskaya Federatsiya) is a transcontinental Country extending For a topic outline on this subject see List of basic Japan topics. For a topic outline on this subject see List of basic Iran topics. Turkey (Türkiye known officially as the Republic of Turkey ( is a Eurasian Country that stretches The Republic of Uganda is a Landlocked country in East Africa. Tanzania ˌtænzəˈniːə officially the United Republic of Tanzania (Jamhuri ya Muungano wa Tanzania is a country in East Africa bordered by Kenya The Republic of Kenya is a country in East Africa. It is bordered by Ethiopia to the north Somalia to the northeast Tanzania to the south
• 1900
  • Africa - 133 million
  • Asia - 946 million
  • Europe - 408 million
  • Latin America & Caribbean - 74 million
  • Northern America - 82 million
• 2050
  • Africa - 1. 9 billion
  • Asia - 5. 2 billion
  • Europe - 664 million
  • Latin America & Caribbean - 769 million
  • Northern America - 445 million^[34]

Birth control

See also: Criticism of the Catholic Church#Opposition to contraception

Overpopulation is also related to issues of birth control, with some nations like China using strict measures in order to reduce birth rates, while religious and ideological opposition to birth control has been cited as a factor contributing to overpopulation and poverty. Birth control, sometimes synonymous with contraception, is a regimen of one or more actions devices or Medications followed in order to deliberately prevent China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National ^[35]

There are an estimated 350 million women in the poorest countries of the world who 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. In the developing world, some 514,000 women die of complications from pregnancy and abortion on a yearly basis. Developing countries are countries that haven't reached Western-style standards of democratic government free market economy industrialization social programs and human rights guaranties Pregnancy ( Latin graviditas) is the carrying of one or more offspring known as a Fetus or Embryo, inside the Uterus of a Female An Additionally, 8 million infants die, many because of malnutrition or preventable diseases. Malnutrition is a general term for a medical condition caused by an improper or insufficient diet. ^[36]

In the United States, in 2001, almost half of pregnancies were unintended. ^[37]

As of June 2008, Egyptian Minister of Health and Population Hatem el-Gabali announced that his country has set aside 480 million Egyptian pounds (about 90 million U. This article is about the country of Egypt For a topic outline on this subject see List of basic Egypt topics. S. dollars) to cope with its overpopulation problem through family planning. Family planning is frequently used to mean that people plan when to have children using Birth control, preconceptional counseling. ^[38]

Resources

David Pimentel,^[39] Professor Emeritus at Cornell University, has stated that "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. "^[40][41]

These reflect the comments also of the United States Geological Survey in their paper The Future of Planet Earth: Scientific Challenges in the Coming Century. The United States Geological Survey ( USGS) is a scientific agency of the United States government. "As the global population continues to grow. . . people will place greater and greater demands on the resources of our planet, including mineral and energy resources, open space, water, and plant and animal resources. A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific Water Crisis is a term that refers to the status of the world’s Water resources relative to human demand "

On the other hand, some writers, such as Julian Simon, Bjorn Lomborg and others of a conservative Libertarian persuasion believe that resources abound for a furtherance of population growth. Julian Simon can be refer to Julian Lincoln Simon (1932-1998 American economist Julián Simón (born 1987 Spanish motorcycle racer Bjørn Lomborg (born January 6, 1965) is a Danish author academic and environmentalist Population scientists have agreed with their assessments that there are indeed more resources left that would enable continued population growth. However, they warn, this will be at a high cost to the Earth - and thus to us, "the technological optimists are probably correct in claiming that overall world food production can be increased substantially over the next few decades. . . [however] the environmental cost of what Paul R. and Anne H. Ehrlich describe as 'turning the Earth into a giant human feedlot' could be severe. A large expansion of agriculture to provide growing populations with improved diets is likely to lead to further deforestation, loss of species, soil erosion, and pollution from pesticides and fertilizer runoff as farming intensifies and new land is brought into production. "^[42] Since we are intimately dependent upon the living systems of the Earth,^[43][44][45] scientists have questioned the wisdom of further expansion. ^[46]

According to the Millennium Ecosystem Assessment, a four-year research effort by 1,360 of the world’s leading scientists commissioned to measure the actual value of natural resources to humans and the world, "The structure of the world’s ecosystems changed more rapidly in the second half of the twentieth century than at any time in recorded human history, and virtually all of Earth’s ecosystems have now been significantly transformed through human actions. The Millennium Ecosystem Assessment (MA is a research program that focuses on Ecosystem changes over the course of decades and projecting those changes into the future "^[47] "Ecosystem services, particularly food production, timber and fisheries, are important for employment and economic activity. Intensive use of ecosystems often produces the greatest short-term advantage, but excessive and unsustainable use can lead to losses in the long term. A country could cut its forests and deplete its fisheries, and this would show only as a positive gain to GDP, despite the loss of capital assets. If the full economic value of ecosystems were taken into account in decision-making, their degradation could be significantly slowed down or even reversed. "^[48][49] The MA blames habitat loss and fragmentation for the continuing disappearance of species.

Another study by the United Nations Environment Programme (UNEP) called the Global Environment Outlook [4] which involved 1,400 scientists and took five years to prepare comes to similar conclusions. The UN Environment Programme (or UNEP) coordinates United Nations environmental activities assisting developing countries in implementing environmentally sound policies The UNEP Global Environment Outlook (GEO project was initiated in response to the environmental reporting requirements of Agenda 21 and to a UNEP Governing Council It "found that human consumption had far outstripped available resources. Each person on Earth now requires a third more land to supply his or her needs than the planet can supply. " It faults a failure to "respond to or recognise the magnitude of the challenges facing the people and the environment of the planet. . . 'The systematic destruction of the Earth's natural and nature-based resources has reached a point where the economic viability of economies is being challenged - and where the bill we hand to our children may prove impossible to pay'. . . The report's authors say its objective is 'not to present a dark and gloomy scenario, but an urgent call to action'. It warns that tackling the problems may affect the vested interests of powerful groups, and that the environment must be moved to the core of decision-making. . . '^[50]

Additionally, other issues involving quality of life - would most people want to live in a world of billions more people - and the basic right of other species to exist in their native environments come into play. Quality of life is the degree of well-being felt by an individual or group of people

Fresh water

Further information: Water crisis

Despite advances in agriculture, the fresh water supplies that it depends on are running low worldwide. Water Crisis is a term that refers to the status of the world’s Water resources relative to human demand Freshwater is a word that refers to bodies of water such as Ponds lakes rivers and streams containing low concentrations of dissolved Salts and other Total dissolved ^[51][52] This water crisis is only expected to worsen as the population increases. Water Crisis is a term that refers to the status of the world’s Water resources relative to human demand Lester R. Brown of the Earth Policy Institute argues that declining water supplies could well have future disastrous consequences for agriculture. For the Canadian football player of the same name see Lester Brown (football player. Earth Policy Institute is an environmental organization based in Washington DC in the United States. ^[53]

However, the amount of freshwater is not necessarily limited to what is currently available in nature. Malta derives two thirds of its freshwater from desalination of salt water. Malta, officially the Republic of Malta (Repubblika ta' Malta is a European Microstate, comprising an Archipelago of three islands Desalination, desalinization, or desalinisation refers to any of several processes that remove excess salt and other Minerals from Water This is an energy-intensive process. One possible solution is large expansion of nuclear powered desalination plants. Nuclear power is any Nuclear technology designed to extract usable Energy from atomic nuclei via controlled Nuclear reactions Such plants already exist. ^[54] Some argue that there are billions of years of nuclear fuel available. ^[55] Critics point to the high costs of desalination technologies, especially for poor third world countries, the impracticability and cost of transporting or piping massive amounts of desalinated seawater throughout the interiors of large countries, and the "lethal byproduct of saline brine that is a major cause of marine pollution when dumped back into the oceans at high temperatures. "^[56]

One study of the costs of desalination and its transport says that "Indeed, one needs to lift the water by 2000 m, or transport it over more than 1600 km to get transport costs equal to the desalination costs. . Desalinated water is expensive in places that are both somewhat far from the sea and somewhat high, such as Riyadh and Harare. In other places, the dominant cost is desalination, not transport. This leads to relatively low costs in places like Beijing, Bangkok, Zaragoza, Phoenix, and, of course, coastal cities like Tripoli. " Still, the study, while generally positive about the technology for affluent areas that are proximate to oceans, concludes that "Desalinated water may be a solution for some water-stress regions, but not for places that are poor, deep in the interior of a continent, or at high elevation. Unfortunately, that includes some of the places with biggest water problems. "^[57]

Israel is now desalinating water for a cost of 53 cents per cubic meter. ^[58] Singapore is desalinating water at a cost of 49 cents per cubic meter. ^[59]

Newer agricultural technologies do not always require more water usage; for example hydroponics and green houses require less. Hydroponics (from the Greek words hydro (water and ponos (labour is a method of growing Plants using mineral Nutrient solutions without A greenhouse (also called a glasshouse or hothouse) is a building where plants are cultivated

Food

Globally, there is enough food to support the world population, and potential to support many more. However, it is not always equally distributed, sometimes resulting in famine in some areas. A famine is a widespread shortage of food that may apply to any Faunal species which phenomenon is usually accompanied by regional Malnutrition, Starvation A main problem is rather the indirect effect of water crisis on food production. Water Crisis is a term that refers to the status of the world’s Water resources relative to human demand

Global perspective

Further information: 2007–2008 world food price crisis

Growth in food production has been greater than population growth. The years 2007–2008 saw dramatic rises in world food prices creating a global crisis and causing political and economical instability and social unrest in Food per person increased during the 1961-2005 period.

The amounts of natural resources in this context are not necessarily fixed, and their distribution is not necessarily a zero-sum game. In Game theory and Economic theory, zero-sum describes a situation in which a participant's gain or loss is exactly balanced by the losses or gains of the other For example, due to the Green Revolution and the fact that more and more land is appropriated each year from wild lands for agricultural purposes, the worldwide production of food has steadily increased faster than population growth. The Green Revolution refers to the transformation of Agriculture that began in 1945 at the request of the Mexican government to establish an agricultural research station to World food production per person was considerably higher in 2005 than 1961. ^[60]

As world population doubled from 3 billion to 6 billion, daily calorie consumption in poor countries increased from 1,932 to 2,650, and the percentage of people in those countries who were malnourished fell from 45% to 18%. This suggests that Third World poverty and famine are caused by underdevelopment, not overpopulation. ^[61] However, others question these statistics. ^[62]

The number of people who are overweight has surpassed the number who are malnourished. In a 2006 news story, MSNBC reported, "There are an estimated 800 million undernourished people and more than a billion considered overweight worldwide. MSNBC is a 24-hour cable television news channel based in the United States and available in Canada. "^[63]

The Food and Agriculture Organization of the United Nations states in its report The State of Food Insecurity in the World 2006, that while the number of undernourished people in the developing countries has declined by about three million, a smaller percentage of the populations of developing countries is undernourished today compared with 1990–92: 17 percent against 20 percent. Furthermore, FAO’s projections suggest that the proportion of hungry people in developing countries could be halved from 1990-92 levels to 10 percent by 2015. The FAO also states "We have emphasized first and foremost that reducing hunger is no longer a question of means in the hands of the global community. The world is richer today than it was ten years ago. There is more food available and still more could be produced without excessive upward pressure on prices. The knowledge and resources to reduce hunger are there. What is lacking is sufficient political will to mobilize those resources to the benefit of the hungry. " [5]PDF

As of late 2007, increased farming for use in biofuels,^[64] world oil prices at nearly $100 a barrel,^[65] global population growth,^[66] climate change,^[67] loss of agricultural land to residential and industrial development,^[68][69] and growing consumer demand in China and India^[70] have pushed up the price of grain. This article is about the price of crude oil see Gasoline usage and pricing for information about derivative motor fuels Population growth is the change in Population over time and can be quantified as the change in the number of individuals in a population using "per unit time" for Climate change is any long-term significant change in the “average weather” that a given region experiences Agriculture refers to the production of goods through the growing of plants and fungi and the raising of domesticated Animals The study of agriculture China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country ^[71] Food riots have recently taken place in many countries across the world. The years 2007–2008 saw dramatic rises in world food prices creating a global crisis and causing political and economical instability and social unrest in ^[72][73][74] An epidemic of stem rust on wheat caused by race Ug99 is currently spreading across Africa and into Asia and is causing major concern. In Epidemiology, an epidemic (from Greek epi- upon + demos people is a classification of a disease that appears as new cases in a Wheat ( Triticum spp is a worldwide cultivated grass from the Levant area of the Middle East. The stem, black or cereal rusts are caused by the Fungus Puccinia graminis and are a significant disease affecting cereal crops A virulent wheat disease could destroy most of the world’s main wheat crops, leaving millions to starve. The fungus has spread from Africa to Iran, and may already be in Afghanistan and Pakistan. For a topic outline on this subject see List of basic Iran topics. Afghanistan /æfˈgænɪstæn/ officially the Islamic Republic of Afghanistan ( Pashto: د افغانستان اسلامي جمهوریت, Pakistan () officially the Islamic Republic of Pakistan, is a country located in South Asia, Southwest Asia, Middle East and ^[75][76][77]

Africa

In Africa, if current trends of soil degradation and population growth continue, the continent might be able to feed just 25% of its population by 2025, according to UNU's Ghana-based Institute for Natural Resources in Africa. The (UNU is an agency of the United Nations established in Tokyo in 1973 to "research into the pressing global problems of human survival development ^[78]

Hunger and malnutrition kill nearly 6 million children a year, and more people are malnourished in sub-Saharan Africa this decade than in the 1990s, according to a report released by the Food and Agriculture Organization. Hunger is a feeling experienced usually followed by a desire to Eat. Malnutrition is a general term for a medical condition caused by an improper or insufficient diet. Sub-Saharan Africa is a geographical term used to describe the area of the African continent which lies south of the Sahara, or those African countries In sub-Saharan Africa, the number of malnourished people grew to 203. 5 million people in 2000-02 from 170. 4 million 10 years earlier says The State of Food Insecurity in the World report.

According to the BBC, the famine in Zimbabwe was caused by government seizure of farmland. ^[79] However drought has also played a major role. ^[80] Thirteen-million people are threatened by famine, in light of the drought in southern Africa. Six-million of them live in Zimbabwe. ^[81] So that is a contingent of fully half of those potentially threatened by the current food shortages, if indeed they get worse, as is projected. ^[81] Prior to this combination of drought and seizure of farmland, Zimbabwe had been exporting so much food that it was called "the breadbasket of southern Africa. " So other countries were also harmed by these farm seizures. ^[79] People who study the Zimbabwean famine claim that normally there are more than enough natural resources to feed the people. ^[82][83][81] Some claim that the dams and rivers in Zimbabwe are full, and that the famine has nothing to do with drought. ^[84] And though it's undoubtedly true that bad governance has exacerbated the famine, still notes the article, "Four weeks without rain at the critical germination phase has led to the failure of [the villagers] small crops. There will be no harvest again until next June. "

Prior to President Robert Mugabe's seizure of the farmland in Zimbabwe, the farmers had been using irrigation to deal with drought, but during the seizures of the farmland, much of the irrigation equipment was either vandalized or looted. ^[85][86] A 2006 BBC article about Mugabe's seizure of farmland states, "Critics say the reforms have devastated the economy and led to massive hunger. Much of the formerly white-owned land is no longer being productively used - either because the beneficiaries have no experience of farming or they lack finance and tools. Many farms were wrecked when they were invaded by government supporters. "^[87]

Israel has 302 people per square kilometre compared with Zimbabwe's 33 people per square kilometre. ^[88] Although Israel is a desert country with frequent drought and very high population density, it does not have famine. One possible reason why Israel does not have famine is because its government respects the property rights of farmers, and encourages them to use modern agriculture and irrigation to grow huge amounts of food. ^[89][90] Still, Israel remains a net importer of food, somewhat detracting from this argument. ^[91] It must also be noted that the high productivity of modern agriculture is currenlty dependant of the utilization of fossil fuels for pesticide and fuel. ^[92]

Mauritius is the most densely populated country in Africa. Mauritius (pronounced məˈrɪʃəs L’île Maurice /il mɔ'ʁis/ Mauritian Creole: Maurice) officially the Republic of Mauritius, République It is 10 times more densely populated than most other African countries, though at a total population of just 1. 23 million, it sits 46th out of Africa's 54 nations for actual population numbers. However, Mauritius does not have famine; on the contrary, it enjoys a First World standard of living. Mauritius (pronounced məˈrɪʃəs L’île Maurice /il mɔ'ʁis/ Mauritian Creole: Maurice) officially the Republic of Mauritius, République The reason Mauritius is doing so well is that it has strong protection of property rights, and because it uses science, technology, industrialization, and modernization. Mauritius (pronounced məˈrɪʃəs L’île Maurice /il mɔ'ʁis/ Mauritian Creole: Maurice) officially the Republic of Mauritius, République ^[93]

Asia

According to a 2004 article from the BBC, China, the world's most populous country, is suffering from an obesity epidemic. ^[94] More recent data indicate China's grain production peaked in the mid 1990s, due to overextraction of groundwater in the North China plain. Groundwater is Water located beneath the Ground surface in Soil pore spaces and in the Fractures of lithologic formations

America

According to a 2007 article from the BBC, scientists at Columbia University have theorized that in the future, densely populated cities such as Mexico City and New York City, which are the largest in North America, may use vertical farming to grow food on each floor of 30-story skyscrapers. Vertical farming is a proposal to perform Agriculture in urban High-rises These building have been called "farmscrapers ^[95]

Population as a function of food availability

Thinkers such as David Pimentel,^[96] a professor from Cornell University, Virginia Abernethy,^[97] Alan Thornhill,^[98] Russell Hopffenberg^[99] and author Daniel Quinn^[100] propose that like any animals, human populations predictably grow and shrink according to their available food supply – populations grow in an abundance of food, and shrink in times of scarcity. The meaning of the word professor ( Latin: professor, person who professes to be an expert in some art or science teacher of highest rank) varies Virginia Deane Abernethy (born 1934 is an American Professor (emerita of Psychiatry and Anthropology at Daniel Quinn (born 1935 in Omaha Nebraska) is a US Writer. He is best known for his book Ishmael (1992 which won the

Proponents of this theory argue that every time food production is increased, the population grows. Some human populations throughout history support this theory. Populations of hunter-gatherers fluctuate in accordance with the amount of available food. A hunter-gatherer society is one whose primary subsistence method involves the direct procurement of edible plants and animals from the wild Foraging and Hunting Population increased after the Neolithic Revolution and an increased food supply. The Neolithic Revolution was the first Agricultural revolution &mdashthe transition from hunting and gathering communities and bands to Agriculture and This was followed by subsequent population growth after subsequent agricultural revolutions.

Critics of this idea point out that birth rates are lowest in the developed nations, which also have the highest access to food. The term developed country, or advanced country, is used to categorize countries with developed Economies in which the tertiary and quaternary sectors In fact, some developed countries have both a diminishing population and an abundant food supply. The United Nations projects that the population of 51 countries or areas, including Germany, Italy, Japan and most of the states of the former Soviet Union, is expected to be lower in 2050 than in 2005. ^[30] This shows that human populations do not always grow to match the available food supply; also, many of these countries are major exporters of food. Nevertheless, on the global scale the world population is increasing^[101]. The world population is the total number of living Humans on Earth at a given time

As a result of water deficits

Water deficits, which are already spurring heavy grain imports in numerous smaller countries, may soon do the same in larger countries, such as China or India. Water Crisis is a term that refers to the status of the world’s Water resources relative to human demand China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country ^[102] The water tables are falling in scores of countries (including Northern China, the US, and India) owing to widespread overpumping using powerful diesel and electric pumps. Other countries affected include Pakistan, Iran, and Mexico. Pakistan () officially the Islamic Republic of Pakistan, is a country located in South Asia, Southwest Asia, Middle East and For a topic outline on this subject see List of basic Iran topics. The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. This will eventually lead to water scarcity and cutbacks in grain harvest. Even with the overpumping of its aquifers, China is developing a grain deficit. An aquifer is an underground layer of Water -bearing Permeable rock or unconsolidated materials ( Gravel, Sand, Silt, or Clay When this happens, it will almost certainly drive grain prices upward. Most of the 3 billion people projected to be added worldwide by mid-century will be born in countries already experiencing water shortages. Water Crisis is a term that refers to the status of the world’s Water resources relative to human demand One suggested solution is for population growth to be slowed quickly by investing heavily in female literacy and family planning services. Population growth is the change in Population over time and can be quantified as the change in the number of individuals in a population using "per unit time" for traditional definition of literacy is considered to be the ability to read and write or the ability to use Language to read, write, listen, Family planning is frequently used to mean that people plan when to have children using Birth control, preconceptional counseling. ^[103] Desalination is also considered a viable and effective solution to the problem of water shortages. Desalination, desalinization, or desalinisation refers to any of several processes that remove excess salt and other Minerals from Water ^[58][59]

After China and India, there is a second tier of smaller countries with large water deficits — Algeria, Egypt, Iran, Mexico, and Pakistan. China ( Wade-Giles ( Mandarin) Chung¹kuo² is a cultural region, an ancient Civilization, and depending on perspective a National India, officially the Republic of India (भारत गणराज्य inc-Latn Bhārat Gaṇarājya; see also other Indian languages) is a country Algeria ( ar [[Arabic]] الجزائر, Al Jaza'ir ælʤæˈzæːʔir Amazigh: ⴷⵥⴰⵢⴻⵔ Dzayer) officially the People's This article is about the country of Egypt For a topic outline on this subject see List of basic Egypt topics. For a topic outline on this subject see List of basic Iran topics. The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. Pakistan () officially the Islamic Republic of Pakistan, is a country located in South Asia, Southwest Asia, Middle East and Four of these already import a large share of their grain. Only Pakistan remains self-sufficient. But with a population expanding by 4 million a year, it will also likely soon turn to the world market for grain. ^[104]

Land

World Resources Institute states that "Agricultural conversion to croplands and managed pastures has affected some 3. Pasture is land with Herbaceous vegetation cover used for grazing of Ungulate Livestock as part of a Farm or Ranch. 3 billion [hectares] — roughly 26 percent of the land area. All totaled, agriculture has displaced one-third of temperate and tropical forests and one-quarter of natural grasslands. "^[105][106] Energy development may also require large areas, like for hydroelectric dams. Hydroelectricity is electricity generated by Hydropower, ie the production of power through use of the gravitational force of falling water Usable land may become less useful through salinization, deforestation, desertification, erosion, and urban sprawl. Soil salinity is the salt content in the soil Salt affected soils are caused by excess accumulation of salts typically most pronounced at the soil surface Deforestation is the conversion of Forested areas to non-forest land for use such as Arable land, Pasture, urban use logged area or wasteland Desertification is the degradation of land in arid and dry sub-humid areas resulting primarily from human activities and influenced by climatic variations Erosion is the carrying away or displacement of solids ( Sediment, Soil, rock and other particles usually by the agents of currents such as wind Urban sprawl, also known as suburban sprawl, is the spreading of a city and its Suburbs over rural land at the fringe of an urban area Global warming may cause flooding of many of the most productive agricultural areas. Thus, available useful land may become a limiting factor. By most estimates, at least half of cultivable land is already being farmed, and there are concerns that the remaining reserves are greatly overestimated. ^[107]

High crop yield vegetables like potatoes and lettuce do not waste space with inedible plant parts, like stalks, husks, vines, and inedible leaves. In Agriculture, crop yield (also known as "agricultural output" is not only a measure of the Yield of cereal per unit area of land under cultivation The potato is a Starchy Tuberous crop Vegetable from the perennial Solanum tuberosum of the Solanaceae Lettuce ( Lactuca sativa) is a Temperate annual or Biennial plant of the daisy family Asteraceae. New varieties of selectively bred and hybrid plants have larger edible parts (fruit, vegetable, grain) and smaller inedible parts; however, many of the gains of agricultural technology are now historic, with new advances being more difficult to achieve. In Biology, hybrid has two meanings The first meaning is the result of interbreeding between two animals or plants of different taxa. With new technologies, it is possible to grow crops on some marginal land under certain conditions. Aquaculture could theoretically increase available area. Aquaculture is the farming of freshwater and saltwater organisms including Molluscs Crustaceans and aquatic plants Hydroponics and food from bacteria and fungi, like Quorn, may allow the growing of food without having to consider land quality, climate, or even available sunlight, although such a process may be very energy-intensive. Hydroponics (from the Greek words hydro (water and ponos (labour is a method of growing Plants using mineral Nutrient solutions without Quorn is the leading brand of Mycoprotein food product in the UK and a leading brand elsewhere

Some claim that not all arable land will remain productive if used for agriculture, as they argue that some marginal land can only be made to produce food by unsustainable practices like slash-and-burn agriculture. Agriculture refers to the production of goods through the growing of plants and fungi and the raising of domesticated Animals The study of agriculture Slash and burn consists of cutting and burning of Forests or Woodlands to create fields for Agriculture or Pasture for Livestock, or Even with the modern techniques of agriculture, the sustainability of production is in question.

Some scientists have said that in the future, densely populated cities will use vertical farming to grow food inside skyscrapers. Vertical farming is a proposal to perform Agriculture in urban High-rises These building have been called "farmscrapers ^[95]

Some countries, such as Dubai have constructed large artificial islands, or have created large dam and dike systems, like the Netherlands, which reclaim land from the water to increase their total land area. Dubai (in دبيّ,) is one of the seven emirates and most populous city of the United Arab Emirates (UAE The Netherlands ( Dutch:, ˈnedərlɑnt is the European part of the Kingdom of the Netherlands, which consists of the Netherlands the Netherlands ^[108]

The space taken by a human being itself is not a problem. It has been noted by a number of thinkers - like noted philosopher Justin West - who deny that overpopulation is a problem - that the entire population of the world could live in Texas (or a land mass the size of Texas). Texas has a total surface area of 261,914 square miles, which is 7. 30174326 × 10^12 square feet. Divided by 7 billion (slightly larger than the current population of the world) would yield an average of 1,043 sq feet per person. Were everyone allotted space thusly, a family of 4 would have roughly a 4000 square foot home. This is assuming, of course, single floor houses. Compacted this way, the rest of North America, and all of South America, Europe, Asia, Africa, Australia and Antarctica would be left vacant of human beings and open to farming.

Ecological footprint

Some groups (for example, the World Wide Fund for Nature^[109][110] and the Global Footprint Network^[111]) have stated that the carrying capacity for the human population has been exceeded as measured using the ecological footprint. The supportable Population of an Organism, given the food habitat, water and other necessities available within an environment is known as the environment's The ecological footprint is a measure of human demand on the Earth's Ecosystems. Critics question the simplifications and statistical methods employed in calculating ecological footprints. Some argue that there is nothing intrinsically negative about using more land to improve living standards. ^[112][113] On the other hand, proponents would counter that there are many moral dilemmas inherent in geopolitically and temporally inequitable distribution of resources.

Energy

Population optimists have also been criticized for failing to account for future shortages in fossil fuels, currently used for fertilizer and transportation for modern agriculture. Fossil fuels or mineral fuels are fossil source Fuels that is Hydrocarbons found within the top layer of the Earth’s crust. (See Hubbert peak and Future energy development. Energy development is the ongoing effort to provide sufficient Primary energy sources and secondary Energy forms to meet civilization's needs ) They counter that there will be enough fossil fuels until suitable replacement technologies have been developed, for example hydrogen in a hydrogen economy. The hydrogen economy is a proposed method of deriving the Energy needed for Motive power (cars boats airplanes buildings or portable electronics by reacting ^[114][115]

In his 1992 book Earth in the Balance, Al Gore wrote, ". Earth in the Balance Ecology and the Human Spirit (ISBN 0-452-26935-0 paperback ISBN 1-85383-743-1 is a 1992 book written by Al Gore, published in June Albert Arnold Gore Jr (born March 31 1948 is an American environmental Activist, author Businessperson, former Politician, and former . . it ought to be possible to establish a coordinated global program to accomplish the strategic goal of completely eliminating the internal combustion engine over, say, a twenty-five-year period. . . "^[116] Plug in electric cars such as the Tesla Roadster suggest that Gore's prediction will come true. The Tesla Roadster is a fully electric Sports car. It is the first car produced by electric car firm Tesla Motors. The Earth has enough uranium to provide humans with all of their electricity needs until the sun blows up in 5 billion years, assuming that we develop large scale breeder reactors. ^[55]

There has also been increasing development in extracting renewable energy, such as from solar, wind, and tidal energy. If used on a wide scale, these could theoretically fulfill most, if not all, of the energy needs currently being filled by non-renewable resources. However, it should be noted that some of these renewable resources also have ecological footprints, though they may be different or smaller than some non-renewable resources. Terrestrial solar and wind power cannot be used for base load generation without some sort of energy storage or transmission over very large geographical areas, since they are transient sources of energy.

Fertilizer

Modern agriculture uses large amounts of fertilizer. Fertilizers ( also spelt fertiliser are chemical compounds given to Plants to promote growth they are usually applied either through the soil for uptake by plant Since much of this fertilizer is made from petroleum, the problem of peak oil is of concern. Petroleum ( L petroleum, from Greek πετρέλαιον, lit According to a 2003 article in Discover magazine, it is possible to use the process of thermal depolymerization to manufacture fertilizer out of garbage, sewage, and agricultural waste. Discover is a Science magazine that publishes articles about Science for a general audience Thermal depolymerization ( TDP) is a process using Hydrous pyrolysis for the reduction of complex Organic materials (usually Waste products of ^[117] A follow up article from 2006 gave more information. ^[118]

Wealth and poverty

As the world's population has grown, the percentage of the world's population living on less than $1 per day (adjusted for inflation) has halved in twenty years. The graph shows the 1981-2001 period.

The United Nations indicates that about 850 million people are malnourished or starving,^[119] and 1. The United Nations ( UN) is an International organization whose stated aims are to facilitate cooperation in International law, International security Malnutrition is a general term for a medical condition caused by an improper or insufficient diet. Starvation (also called inanition) is a severe reduction in Vitamin, Nutrient, and Energy intake and is the most extreme form of 1 billion people do not have access to safe drinking water. Water Crisis is a term that refers to the status of the world’s Water resources relative to human demand ^[120] Thus some argue that the Earth may support 6 billion people, but only on the condition that many live in misery. Others posit that poverty was worse in the past when the population was smaller, and that worldwide poverty is declining as the population grows. Poverty (also called penury) is deprivation of common necessities that determine the quality of life including food clothing shelter and safe Drinking water, and The percentage of the world's population living on less than $1 per day has halved in twenty years; these are inflation adjusted numbers. ^[121] Furthermore, a 2007 article from Investor's Business Daily suggests that the population explosion has been accompanied by an increase in worldwide living standards. The article states, "On a per-person basis, real average incomes have more than tripled since 1950 worldwide. And in once-poor areas with the greatest trade liberalization — like East Asia — growth has been even greater, soaring 5,675% from 1950 to 2003. "^[122].

However states the UN Human Development Report from 1997 "During the last 15-20 years, more than 100 developing countries, and several East European countries, have suffered from disastrous growth failures. The reductions in standard of living have been deeper and more long-lasting than what was seen in the industrialised countries during the depression in the 1930s. As a result, the income for more than one billion people has fallen below the level that was reached 10, 20 or 30 years ago. " How do some massage the numbers to come up with a rosy picture for the third world? Says Pimm and Harvey "Lomborg’s great optimism about humanity’s future shows up in the way he presents statistics. In sub-Saharan Africa, 'starving people' constituted '38 percent in 1970 … [but only] '33 percent … in 1996. [The percentage is] expected to fall even further to 30 percent in 2010. ' The absolute numbers of starving are curiously missing from these paragraphs. Roughly, the region’s population doubled between 1970 and 1996. To keep the numbers of starving constant, the percentage would have had to have dropped by more than half. "^[123]. In other words, the percentages Lomborg presents would indeed be impressive in an environment with no population growth, but in one wherein the population has doubled the absolute numbers has actually risen dramatically. ^[124][48]

For example, North Korea and South Korea have similar population densities, natural resources, and even parallel cultures (ethnically based in Korean) sharing the same peninsular homeland; but, whereas North Korea is a poverty-stricken, socialist country where its people are suffering from terrible famine and are destitute, South Korea is a prosperous, capitalist country where the people are well nourished and materially/economically secure (without just a small portion of the entire poulation benefiting from the wealth [as do North Korea's Communist Party officials with the little wealth their country has] but all the nation's people benefitting from their economic successes) despite the fact that South Korea's population is double that of North Korea's population with a higher fertility rate (hence a faster growing population) as well. North Korea is the commonly used short form name for the Democratic People's Republic of Korea (or DPRK) a State located in East Asia, South Korea, officially the Republic of Korea and often referred to as Korea ( Korean: 대한민국 tɛː North Korea is the commonly used short form name for the Democratic People's Republic of Korea (or DPRK) a State located in East Asia, South Korea, officially the Republic of Korea and often referred to as Korea ( Korean: 대한민국 tɛː This suggests that it is bad economic polices, not "overpopulation," that causes famine. Various Indices of Economic Freedom suggest that countries with a strong level of economic freedom never have famines or even food shortages, regardless of how high their population densities. ^[93] However, it must be taken into account that most prosperous capitalist countries, with high population densities, are extremely reliant on imports from poorer countries and therefore have not solved the problem of massive poverty, but are assuming a different position in it. Affluent capitalist countries may exceed their own land bases' carrying capacity and rely on poorer countries for resources, production, and labor in order to maintain their level of wealth. It is not the case that affluent countries are effected as negatively by overpopulation as are poorer countries. But, the problem of poverty and overpopulation must be looked at on a global basis and not country by country, as certain countries may very well benefit from the abundance of cheap labor in another country.

Clean air

Once a country has industrialized and become wealthy, a combination of government regulation (as one possible choice for effective action) and technological innovation may cause air pollution to decline substantially, even as its population continues to grow. For example, in the United States between 1970 and 2006, the population increased by 42%, inflation adjusted GNP grew by 195%, the number of automobiles more than doubled, and the total number of miles driven increased by 178%. However, according to the Environmental Protection Agency, during that same time period, there were substantial reductions in total annual emissions of carbon monoxide, nitrogen oxides, sulfur dioxide, particulates, and lead. Carbon monoxide, with the chemical formula CO is a colorless odorless tasteless yet highly toxic Gas. The term nitrogen oxide typically refers to any Binary compound of Oxygen and Nitrogen, or to a mixture of such compounds Nitric Particulates, alternatively referred to as particulate matter (PM or fine particles, are tiny particles of solid or liquid suspended in a gas Characteristics Lead has a dull luster and is a dense, Ductile, very soft highly ^[125]

Environment

Overpopulation has had a major impact on the environment of Earth starting at least as early as the 20th century. ^[126] Many posit that the human population has expanded, enabled by over-exploiting natural resources, with resultant adverse impacts upon biodiversity, aquifer sustainability, climate change and even human health. Natural resources are naturally occurring substances that are considered valuable in their relatively unmodified ( natural) form Biodiversity is the variation of Life forms within a given Ecosystem, Biome or for the entire Earth. Climate change is any long-term significant change in the “average weather” that a given region experiences There are also indirect economic consequences of this environmental degradation in the form of ecosystem services attrition. Humankind benefits from a multitude of resources and processes that are supplied by natural Ecosystems. ^[127] Beyond the scientifically verifiable harm to the environment, some argue the moral right of other species to simply exist, protected from human exploitation. Says environmental author Jeremy Rifkin, "our burgeoning population and urban way of life have been purchased at the expense of vast ecosystems and habitats. . . . It's no accident that as we celebrate the urbanization of the world, we are quickly approaching another historic watershed: the disappearance of the wild. "^[128]

Says Peter Raven, former President of AAAS (the American Association for the Advancement of Science) in their seminal work AAAS Atlas of Population & Environment, "Where do we stand in our efforts to achieve a sustainable world? Clearly, the past half century has been a traumatic one, as the collective impact of human numbers, affluence (consumption per individual) and our choices of technology continue to exploit rapidly an increasing proportion of the world's resources at an unsustainable rate. The American Association for the Advancement of Science (or AAAS) is an organization that promotes cooperation between Scientists defends scientific freedom encourages . . . During a remarkably short period of time, we have lost a quarter of the world's topsoil and a fifth of its agricultural land, altered the composition of the atmosphere profoundly, and destroyed a major proportion of our forests and other natural habitats without replacing them. Topsoil is the upper outermost layer of soil usually the top 2 to 8 inches An atmosphere (from Greek ατμός - atmos, " Vapor " + σφαίρα - sphaira, " Sphere " A habitat (which is Latin for "it inhabits" is an Ecological or environmental area that is inhabited by a particular Species. Worst of all, we have driven the rate of biological extinction, the permanent loss of species, up several hundred times beyond its historical levels, and are threatened with the loss of a majority of all species by the end of the 21st century. In Biology and Ecology, extinction is the cessation of existence of a Species or group of taxa. "

Cities

In 1800 only 3% of the world's population lived in cities. The world population is the total number of living Humans on Earth at a given time By the 20th century's close, 47% did so. In 1950, there were 83 cities with populations exceeding one million; but by 2007, this had risen to 468 agglomerations of more than one million. ^[129] If the trend continues, the world's urban population will double every 38 years, say researchers. A metropolis (from the Greek μήτηρ mētēr meaning 'mother' and πόλις pólis meaning 'city/town' is a big City, in most cases with The UN forecasts that today's urban population of 3. 2 billion will rise to nearly 5 billion by 2030, when three out of five people will live in cities. ^[130]

The increase will be most dramatic in the poorest and least-urbanised continents, Asia and Africa. Surveys and projections indicate that all urban growth over the next 25 years will be in developing countries. Developing countries are countries that haven't reached Western-style standards of democratic government free market economy industrialization social programs and human rights guaranties ^[131] One billion people, one-sixth of the world's population, or one-third of urban population, now live in shanty towns,^[132] which are seen as "breeding grounds" for social problems such as crime, drug addiction, alcoholism, poverty and unemployment. Shanty towns (also called Squatter camps or Favelas are settlements (sometimes illegal or unauthorized of impoverished people who live in improvised In the sociological field, crime is the breach of a rule or Law for which some governing authority or force may ultimately prescribe a Punishment Drug addiction is widely considered a pathological state. The disorder of addiction involves the progression of acute Drug use to the development of drug-seeking Alcoholism is a term with multiple and sometimes conflicting definitions Poverty (also called penury) is deprivation of common necessities that determine the quality of life including food clothing shelter and safe Drinking water, and Unemployment occurs when a person is available to work and currently seeking work but the person is without work. In many poor countries slums exhibit high rates of disease due to unsanitary conditions, malnutrition, and lack of basic health care. A slum, as defined by the United Nations agency UN-HABITAT, is a run-down area of a city characterized by substandard housing and squalor and lacking in tenure security Tropical diseases are diseases that are prevalent in or unique to tropical and subtropical regions ^[133]

In 2000, there were 18 megacities – conurbations such as Tokyo, Mexico City, Mumbai (Bombay), São Paulo and New York City – that have populations in excess of 10 million inhabitants. A megacity is generally defined as a Metropolitan area with a total Population in excess of 10 million people officially, is one of the 47 prefectures of Japan and located on the eastern side of the main island Honshū. Mexico City (in Spanish: Ciudad de México, México DF, México or simply Méjico) is the Capital city of Mexico Mumbai ( Marathi:,, IPA: formerly Bombay, is the capital of the Indian state of Maharashtra and the financial São Paulo ( is the largest city in Brazil, with its metropolitan area ranking among the largest urban areas in the world The City of New York Greater Tokyo already has 35 million, more than the entire population of Canada. The Greater Tokyo Area is a large Metropolitan area in Japan consisting of most of the prefectures of Chiba, Kanagawa, Saitama Country to "Dominion of Canada" or "Canadian Federation" or anything else please read the Talk Page ^[134]

By 2025, according to the Far Eastern Economic Review, Asia alone will have at least 10 hypercities, those with 20 million or more, including Jakarta (24. Jakarta (also DKI Jakarta) is the Capital and largest city of Indonesia. 9 million people), Dhaka (25 million), Karachi (26. Dhaka (also known as Dacca ( Bangla: ঢাকা ɖʱaka is the Capital of Bangladesh and the principal city of Dhaka District. (ڪراچي) is the largest city in Pakistan. It is the world's second largest city proper behind Mumbai in terms of population which exceeds 10 million 5 million), Shanghai (27 million) and Mumbai (with a staggering 33 million). Shanghai ( 上[[wikt 海|海]] is the largest city in China in terms of population and one of the largest urban areas in the world with over 20 million Mumbai ( Marathi:,, IPA: formerly Bombay, is the capital of the Indian state of Maharashtra and the financial ^[135] Lagos has grown from 300,000 in 1950 to an estimated 15 million today, and the Nigerian government estimates that city will have expanded to 25 million residents by 2015. Lagos ( pron ˈleɪgɒs or /ˈlɑːgoʊs/ overseas is the most populous Conurbation in Nigeria with ^[136] Chinese experts forecast that Chinese cities will contain 800 million people by 2020. ^[137]

Despite this increase in population density within the cities and the rise of more megacities, UN Habitat stated in its reports that if these 2 matters do not negate the fact that city living can be the best solution for dealing with the rising population numbers (and thus still be a good approach on dealing with overpopulation). A habitat (which is Latin for "it inhabits" is an Ecological or environmental area that is inhabited by a particular Species. ^[138] This however can only be achieved if urban planning is improved^[139] and if the city services are properly maintained.

Ecological footprint by world region

Further information: List of most overpopulated countries

As set forth on page 18 of WWF's Living Planet report, the regions of the world with the greatest ecological footprint^[140] are ranked as follows:

1. North America
2. Europe (European Union countries)
3. Middle-East and Central Asia
4. Asia and Pacific Islands
5. Africa
6. Europe (Non-European Union countries)
7. Latin-America and the Caribbean

Regions are ranked by their per capita consumption of resources. However this ranking may be out-dated, since data were collected in 2003.

Effects of overpopulation

Some problems associated with or exacerbated by human overpopulation:

• Inadequate fresh water^[120] for drinking water use as well as sewage treatment and effluent discharge. Human beings, humans or man (Origin 1590–1600 L homō man OL hemō the earthly one (see Humus Water of sufficient quality to serve as drinking water is termed potable water whether it is used for drinking or not Sewage treatment, or domestic wastewater treatment, is the process of removing Contaminants from Wastewater, both Runoff ( Effluents Effluent is an outflowing of water from a natural body of water or from a man-made structure Some countries, like Saudi Arabia, use energy-expensive desalination to solve the problem of water shortages. The Kingdom of Saudi Arabia, KSA ( المملكة العربية السعودية, al-Mamlaka al-ʻArabiyya as-Suʻūdiyya) or Suudi Desalination, desalinization, or desalinisation refers to any of several processes that remove excess salt and other Minerals from Water ^[141][142]
• Depletion of natural resources, especially fossil fuels^[143]
• Increased levels of air pollution, water pollution, soil contamination and noise pollution. Fossil fuels or mineral fuels are fossil source Fuels that is Hydrocarbons found within the top layer of the Earth’s crust. Air pollution is the human introduction into the atmosphere of Chemicals Particulate matter, or Biological materials that cause harm or discomfort Water pollution is the contamination of Water bodies such as Lakes Rivers Oceans and Groundwater caused by human activities Soil contamination is caused by the presence of man-made chemicals or other alteration in the natural soil environment Noise pollution (or environmental noise) is displeasing human- or machine-created sound that disrupts the activity or balance of human or animal life Once a country has industrialized and become wealthy, a combination of government regulation and technological innovation causes pollution to decline substantially, even as the population continues to grow. ^[125]
• Deforestation and loss of ecosystems^[144] that sustain global atmospheric oxygen and carbon dioxide balance; about eight million hectares of forest are lost each year. ^[145]
• Changes in atmospheric composition and consequent global warming^[146]
• Irreversible loss of arable land and increases in desertification^[147] Deforestation and desertification can be reversed by adopting property rights, and this policy is successful even while the human population continues to grow. Global warming is the increase in the average measured temperature of the In Geography, arable land (from Latin arare, to Plough) is an agricultural term meaning land that can be used for Desertification is the degradation of land in arid and dry sub-humid areas resulting primarily from human activities and influenced by climatic variations ^[148]
• Mass species extinctions. An extinction event (also known as mass extinction; extinction-level event, ELE is a sharp decrease in the number of Species in a relatively short period ^[149] from reduced habitat in tropical forests due to slash-and-burn techniques that sometimes are practiced by shifting cultivators, especially in countries with rapidly expanding rural populations; present extinction rates may be as high as 140,000 species lost per year. Tropical and subtropical moist broadleaf forests (TSMF also known as tropical moist forests, are a Tropical and Subtropical Forest Slash and burn consists of cutting and burning of Forests or Woodlands to create fields for Agriculture or Pasture for Livestock, or For methods see Slash and burn Shifting cultivation is an Agricultural system in which plots of land are cultivated temporarily then abandoned In Biology and Ecology, extinction is the cessation of existence of a Species or group of taxa. In Biology, a species is one of the basic units of Biological classification and a Taxonomic rank. ^[150] The IUCN Red List lists a total of 698 animal species having gone extinct during recorded human history. The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List) created in 1963 is the world's most comprehensive inventory of the global ^[151]
• High infant and child mortality. ^[152] High rates of infant mortality are caused by poverty. Rich countries with high population densities have low rates of infant mortality. [6]
• Increased chance of the emergence of new epidemics and pandemics^[153] For many environmental and social reasons, including overcrowded living conditions, malnutrition and inadequate, inaccessible, or non-existent health care, the poor are more likely to be exposed to infectious diseases. This article is a list of major Epidemics. Worldwide pandemics The following are Epidemics which spread across several continents A pandemic (from Greek παν pan all + δήμος demos people is an Epidemic of Infectious disease that spreads through Malnutrition is a general term for a medical condition caused by an improper or insufficient diet. Health care is the prevention treatment and management of illness and the preservation of mental health through the services offered by the medical, Nursing An infectious disease is a clinically evident Disease resulting from the presence of Pathogenic microbial agents including Pathogenic viruses Pathogenic ^[154]
• Starvation, malnutrition^[119] or poor diet with ill health and diet-deficiency diseases (e. Starvation (also called inanition) is a severe reduction in Vitamin, Nutrient, and Energy intake and is the most extreme form of Malnutrition is a general term for a medical condition caused by an improper or insufficient diet. g. rickets). Rickets is a softening of the bones in children potentially leading to fractures and deformity Famine is aggravated by poverty. A famine is a widespread shortage of food that may apply to any Faunal species which phenomenon is usually accompanied by regional Malnutrition, Starvation Rich countries with high population densities do not have famine. ^[155][156]
• Poverty coupled with inflation in some regions and a resulting low level of capital formation. Poverty and inflation are aggravated by bad government and bad economic policies. Many countries with high population densities have eliminated absolute poverty and keep their inflation rates very low. ^[93]
• Low life expectancy in countries with fastest growing populations^[157]
• Unhygienic living conditions for many based upon water resource depletion, discharge of raw sewage^[158] and solid waste disposal
• Elevated crime rate due to drug cartels and increased theft by people stealing resources to survive^[159]
• Conflict over scarce resources and crowding, leading to increased levels of warfare^[160]

Extraterrestrial population projections

Even as far back as 1798, Thomas Malthus stated in An Essay on the Principle of Population:

"The germs of existence contained in this spot of earth, with ample food, and ample room to expand in, would fill millions of worlds in the course of a few thousand years. Life expectancy is the average number of years of life remaining at a given age Thomas Robert Malthus FRS (13 February 1766 – 23 December 1834 was an English political economist and demographer who expressed views The book An Essay on the Principle of Population was first published anonymously in 1798 through J "

In the 1970s, Gerard O'Neill suggested building space habitats that could support 30,000 times the carrying capacity of Earth using just the asteroid belt and that the solar system as a whole could sustain current population growth rates for a thousand years. A space habitat, also called space colony, orbital colony, space city, or space settlement is a Space station intended as a ^[161] Marshall Savage (1992, 1994) has projected a population of five quintillion throughout the solar system by 3000, with the majority in the asteroid belt. Marshall T Savage is an advocate of space travel who wrote The Millennial Project Colonizing the Galaxy in Eight Easy Steps and founded the Living Universe Foundation The Solar System consists of the Sun and those celestial objects bound to it by Gravity. The asteroid belt is the region of the Solar System located roughly between the orbits of the Planets Mars and Jupiter. ^[162] Arthur C. Clarke, a fervent supporter of Savage, argued that by 2057 there will be humans on the Moon, Mars, Europa, Ganymede, Titan and in orbit around Venus, Neptune and Pluto. Sir Arthur Charles Clarke, CBE (16 December 1917–19 March 2008 was a British Science fiction Author, Inventor, and TemplateInfobox Planet.--> Europa (jʊˈroʊpə; or as TemplateInfobox Planet.--> Ganymede (ˈgænɨmiːd, or as Greek TemplateInfobox Planet.--> Titan (ˈtaɪtən, or as The VENUS ( V ictoria E xperimental N etwork U nder the S ea project is a cabled sea floor observatory operated by the University Neptune ( English|AmE] ] is the eighth and farthest Planet from the Sun in the Solar System. ^[163] Freeman Dyson (1999) favours the Kuiper belt as the future home of humanity, suggesting this could happen within a few centuries. Freeman John Dyson FRS (born December 15, 1923) is an English-born American theoretical Physicist and Mathematician, famous for his The Kuiper belt (ˈkaɪpɚ to rhyme with "viper" sometimes called the Edgeworth-Kuiper belt, is a region of the Solar System beyond the planets extending ^[164] In Mining the Sky, John S. Lewis suggests that the staggering resources of the solar system could support 10 quadrillion (10^16) people. Mining the Sky Untold Riches from the Asteroids Comets and Planets is a book by John S John S Lewis is a professor of Planetary science at the University of Arizona ’s Lunar and Planetary Laboratory

K. Eric Drexler, famous inventor of the futuristic concept of Molecular Nanotechnology, has suggested in Engines of Creation that colonizing space will mean breaking the Malthusian limits to growth forever for the human species. Kim Eric Drexler (born April 25, 1955 in Oakland California) is an American engineer best known for popularizing the potential of Molecular Molecular nanotechnology (MNT is the concept of engineering functional mechanical systems at the molecular scale Engines of Creation is a seminal Molecular nanotechnology book written by K A Malthusian catastrophe (or Malthusian check, crisis, dilemma, disaster, trap, controls, or limit) is a return

Many authors (eg. Carl Sagan, Arthur C. Clarke,^[165] Isaac Asimov^[166]) have argued that shipping the excess population into space is no solution to human overpopulation, saying that (Clarke, 1999) "the population battle must be fought or won here on Earth. Carl Edward Sagan ( November 9 1934 &ndash December 20 1996) was an American Astronomer, astrochemist, author Sir Arthur Charles Clarke, CBE (16 December 1917–19 March 2008 was a British Science fiction Author, Inventor, and Isaac Asimov (c January 2 1920 &ndash April 6 1992 ˈaɪzək ˈæzɪmʌv originally Исаак Озимов but now transcribed into Russian as, was a Russian " It is not the lack of resources in space that they see as the problem (as books such as Mining the sky demonstrate^[167]); it is the sheer physical impracticality of shipping vast numbers of people into space to "solve" overpopulation on Earth that these authors and others regard as absurd. Mining the Sky Untold Riches from the Asteroids Comets and Planets is a book by John S However, Gerard O'Neill's calculations show that the Earth could offload all new population growth with a launch services industry about the same size as the current airline industry in O'Neill, Gerard K. (1981). 2081: A Hopeful View of the Human Future. Simon and Schuster. ISBN 0-671-44751-3.  .

Current amount of overpopulation

In 2006, WWF's "Living Planet" report stated that if we all want to live with a high degree of luxury (European standards), we would be spending three times more than what the planet can supply. ^[168] In other reports, such as the one cited in the The Planet-documentary, it is mentioned that we already consume five times more than that the planet can supply, given the current population numbers and our standard of living. The Planet is a Swedish documentary film on environmental issues released in 2006. Although there is still no real consensus, it is expected that the amount of overpopulation currently lies within this range.

Overpopulation in literature

In 1729, Jonathan Swift wrote the satirical essay A Modest Proposal where he suggests one solution for both the problem of overpopulation and the growing numbers of undernourished people in Ireland: cannibalism, particularly the raising of infants as food. Jonathan Swift (30 November 1667 A Modest Proposal For Preventing the Children of Poor People in Ireland from Being a Burden to Their Parents or Country and for Making Them Beneficial to the Public, Cannibalism (from Spanish es ''caníbal'' in connection with cannibalism among the Antillean Caribs, also called anthropophagy (from Greek ἄνθρωπος

Science fiction writers have frequently made famous predictions in which they portrayed dystopian futures in which the world has become massively overpopulated. A dystopia (from the Greek δυσ- and τόπος alternatively cacotopia, kakotopia, cackotopia, or anti-utopia) is the vision of a society This became a major theme in the 1950s and 1960s. One of the first depictions of future megacities was The Caves of Steel by Isaac Asimov (1954). The Caves of Steel is a novel by Isaac Asimov. It is essentially a detective story, and illustrates an idea Asimov advocated that Science fiction Isaac Asimov (c January 2 1920 &ndash April 6 1992 ˈaɪzək ˈæzɪmʌv originally Исаак Озимов but now transcribed into Russian as, was a Russian The 1960s saw increasing anxiety about the prospect of the exponential growth of world population, underscored by the publication of Paul R. Ehrlich's non-fiction The Population Bomb, in 1968. Exponential growth (including Exponential decay) occurs when the growth rate of a mathematical function is proportional to the function's current value The world population is the total number of living Humans on Earth at a given time Paul Ralph Ehrlich (born May 29 1932 in Philadelphia Pennsylvania) is a renowned Entomologist specializing in Lepidoptera (butterflies The Population Bomb (1968 is a book written by Paul R Ehrlich. The 1969 Star Trek: The Original Series episode entitled The Mark of Gideon dealt with a race of overpopulated aliens who abducted Captain Kirk to solve their population problem. Star Trek is a Science fiction Television series created by Gene Roddenberry that aired from September 8, 1966 through " The Mark of Gideon " is a third season episode of Star Trek The Original Series, and was broadcast on January 17, 1969.

In the same year, John Brunner's science-fictional Stand on Zanzibar was published. John Kilian Houston Brunner ( September 24, 1934 &ndash August 26, 1995) was a prolific British author of Science fiction Stand on Zanzibar is a dystopic New Wave Science fiction Novel written by John Brunner and first published in 1968 (ISBN This is perhaps the definitive overpopulation novel to date, though Harry Harrison's Make Room! Make Room! also became a powerful film (Soylent Green). For the radio personality see Harry Harrison (radio. Harry Harrison (born Henry Maxwell Dempsey, March 12 1925 Make Room! Make Room! is a 1966 Science fiction novel written by Harry Harrison exploring the consequences of unchecked population growth on society Soylent Green " in popular culture the section "Cultural impact" was created as a "catch-all" of the cultural references to Logan's Run is a novel by William F. Nolan and George Clayton Johnson (1967), describing a dystopian future society in which the population is kept young by euthanizing everyone who reaches a certain age, thus neatly avoiding the problem of overpopulation. Logan's Run is a Novel by William F Nolan and George Clayton Johnson. William Francis Nolan (born March 6, 1928) is an American Author, who writes mostly in the Science fiction, Fantasy and George Clayton Johnson (born July 10, 1929 in Cheyenne Wyoming) is a Science fiction writer most famous for co-writing the novel Logan's A dystopia (from the Greek δυσ- and τόπος alternatively cacotopia, kakotopia, cackotopia, or anti-utopia) is the vision of a society Euthanasia (literally "good death" in Ancient Greek) refers to the practice of ending a life in a painless manner A 1972 film called Z. P. G. ^[169] featured an overpopulated, very polluted future Earth, whose world government practices Zero Population Growth, executing persons who violate the 30-year ban on procreation. World government is the concept of a political body that would make interpret and enforce International law. Population Connection is an organization in the United States formerly known as Zero Population Growth. Reproduction is the Biological process by which new individual Organisms are produced Another 1971 film, called The Last Child^[170] also took a stub at laws in the future where families are only allowed to have 1 child and people over 65 are forbidden medical care.

J. G. Ballard's story Billennium pictures a future in which every individual has four, then just three, square meters of living space. James Graham Ballard (born 15 November in the International Settlement in Shanghai, China) is a British Novelist and Short Billennium (pl billennia) is a Neologism which is a combination either of " billion " and " Millennium " that is a period Frederik Pohl in The Space Merchants described a future in which even public staircases are rented out as living spaces. Frederik George Pohl Jr (born November 26, 1919) is a American Science fiction writer, editor and fan, with a career The Space Merchants is a Science fiction novel by Frederik Pohl and Cyril M Robert Silverberg's The World Inside imagines a future with mile high towers holding a million people each. Robert Silverberg (born January 15, 1935) is a prolific American author best known for writing Science fiction. The World Inside is a Science fiction Novel written by Robert Silverberg and published in 1971. James Blish and Norman L. James Benjamin Blish ( East Orange, New Jersey, May 23, 1921 – Henley-on-Thames, July 30, 1975) was an Knight in A Torrent of Faces imagine a nightmarish future of one trillion living in just 100,000 cities on Earth.

A similar point, from the opposite point of view, is made by Ursula K. LeGuin in the utopian part of her novel Always Coming Home, in which the visiting anthropologist recognises that one of the reasons for the success and stability of the Kesh culture is simply that there are fewer of them (in the post-apocalyptic future) than previously. Ursula Kroeber Le Guin (ˈɝsələ ˈkroʊbɚ ləˈgwɪn (born October 21, 1929) is an American author Utopia is a name for an ideal community taken from the title of a book written in 1516 by Sir Thomas More describing a fictional Island in the Always Coming Home is a novel by Ursula K Le Guin published in 1985

Cyberpunk fiction, such as that of William Gibson, often depicts huge, sprawling cities. Cyberpunk is a Science fiction genre noted for its focus on " High tech and low life. William Ford Gibson (born March 17 1948 is an American - Canadian writer who has been called the "noir prophet" of the Cyberpunk subgenre Yet these are as remarkable for their energy and diversity as for their more dystopian characteristics.

One of the reasons for this may be the rise of environmental fiction with The End of Nature (1990) by Bill McKibben, the environmental trilogy Ishmael (1992), The Story of B (1996), and My Ishmael (1997) by Daniel Quinn. Bill McKibben is an American Environmentalist and writer Ishmael is a Novel by Daniel Quinn. It examines Mythology, its effect on ethics, and how that relates to Sustainability The Story of B a 1996 novel written by Daniel Quinn and published by Bantam Publishing My Ishmael is a sequel to the novel Ishmael by Daniel Quinn. Its plot revolves around a Gorilla named Ishmael who describes Daniel Quinn (born 1935 in Omaha Nebraska) is a US Writer. He is best known for his book Ishmael (1992 which won the With the host of environmental problems caused by overpopulation, almost by definition, talking about one is talking about the other.

The Shadow Children sequence is a fictional account of a totalitarian government attempting to quell overpopulation by exterminating all children born third or later in a family. The Shadow Children sequence is a series of books by Margaret Peterson Haddix about a futuristic overpopulated resource-deprived Earth and the effects of the government's Totalitarianism (or totalitarian rule) is a concept used to describe Political systems where a State regulates nearly every aspect of public and private

In the movie and latter video game Reign of Fire (film) a number of Dragons overpopulate the planet Earth, killing nearly all life before becoming extinct. Reign of Fire is a 2002 action / science fiction Film directed by Rob Bowman and starring Christian Bale, In this movie it is stated that these creatures have caused at least one massive extinction on earth through overpopulation.

See also

• List of overpopulated countries
• National Security Study Memorandum 200 (a U. National Security Study Memorandum 200 (NSSM200 was completed on December 10, 1974 by the U S. NSS document from the 1970s)
• The Planet a detailed documentary on overpopulation
• Rientrodolce (an Italian interest group which lobbies against overpopulation)
• World Population Foundation
• The Ultimate Resource, a work by Julian Simon challenging the perceived dangers of overpopulation

Concepts

Global Issues

References

Further reading

• Virginia Abernethy, professor (emerita) of psychiatry and anthropology, Population Politics, (1993)
• Albert Bartlett, emeritus professor of physics, Arithmetic, Population, and Energy: The Forgotten Fundamentals of the Energy Crisis, (1978)
• Joel E. Cohen, Chair, Laboratory of Populations at the Rockefeller University, How Many People Can the Earth Support? (1996)
• Barry Commoner, American biologist and college professor Making Peace with the Planet (1990)
• Herman Daly, professor at the School of Public Policy at the University of Maryland, College Park Ecological Economics and the Ecology of Economics (1999)
• Paul R. Ehrlich, Bing Professor of Population Studies, The Population Bomb, (1968) The Population Explosion, (1990) The Population Bomb, (1995) reprint
• Garrett Hardin, 1941 Stanford University - Ph. Virginia Deane Abernethy (born 1934 is an American Professor (emerita of Psychiatry and Anthropology at Albert A Bartlett is an emeritus Professor of Physics at the University of Colorado at Boulder, USA Joel E Cohen (b February 10, 1944) is a mathematical biologist Barry Commoner (born May 28 1917) is an American Biologist, college Professor, and eco-socialist. Herman Daly (born 1938 is an American Ecological economist and professor at the School of Public Policy of University of Maryland College Park in the Paul Ralph Ehrlich (born May 29 1932 in Philadelphia Pennsylvania) is a renowned Entomologist specializing in Lepidoptera (butterflies The Population Bomb (1968 is a book written by Paul R Ehrlich. Garrett James Hardin ( April 21, 1915 &ndash September 14, 2003) was a leading and controversial Ecologist from Dallas D. Microbiology, Living Within Limits, (1995) reprint
• Steven LeBlanc, Constant battles: the myth of the peaceful, noble savage, (2003) ISBN 0312310897 argues that local overpopulation has been the major cause of warfare since paleolithic times. The term Paleolithic (or Palaeolithic) (from Greek παλαιός palaios, " Old " and λίθος Lithos, "stone"
• Andrew Mason, Professor, head of the University of Hawaii's population studies program, Population change and economic development in East Asia: Challenges met, opportunities seized (2001)
• Donella Meadows, lead author Ph. Donella "Dana" Meadows ( March 13, 1941 Elgin Illinois, USA - February 20, 2001, New Hampshire) was a pioneering D. in biophysics from Harvard, Jorgen Randers, professor of policy analysis at the Norwegian School of Management, Dennis Meadows, director of the Institute for Policy and Social Science Research Limits to Growth: The 30-Year Update (Paperback) (2004)
• Thomas Malthus, English demographer and political economist, An Essay on the Principle of Population, (1798)
• Julian Lincoln Simon, professor of Business Administration The Ultimate Resource 2, (1998)"
• Ben J. Wattenberg, senior fellow at the neoconservative American Enterprise Institute, The Birth Dearth (1989) ??? Fewer: How the New Demography of Depopulation Will Shape Our Future, (2005)
• Daniel Quinn, author The Story of B, pp 304-305 (1996)

External links

• United Nations world population site. Projections and historical information. Dennis Meadows (born June 7 1942) is an American scientist and professor of Systems Management and director of the Institute for Policy and Social Science Research Limits to Growth is a 1972 book modeling the consequences of a rapidly growing World population and finite resource supplies commissioned by the Thomas Robert Malthus FRS (13 February 1766 – 23 December 1834 was an English political economist and demographer who expressed views Julian Lincoln Simon (born February 12, 1932; died February 8, 1998 in Chevy Chase Maryland of Heart attack) was Benjamin J Wattenberg (b August 26, 1933, The Bronx, New York) is an American Neo-conservative commentator and writer Daniel Quinn (born 1935 in Omaha Nebraska) is a US Writer. He is best known for his book Ishmael (1992 which won the The Story of B a 1996 novel written by Daniel Quinn and published by Bantam Publishing
• UN Online databases with selectable variants, either basic or detailed information.
• "Bursting at the seams", Jeffrey Sachs's lectures on overpopulation
• AAAS Atlas of Population and Environment
• U.S. Population Reaches 300 Million, Heading for 400 Million -- No Cause for Celebration
• Earth Policy Institute Resources on POPULATION and HEALTH
• Chart: World Population Growth Through History
• VOA News - World Population Growth to be Concentrated in Developing Nations
• Map over population density
• Is World Population a Concern? Robert Heilbroner, Thomas Malthus, and the Application of Both
• Agriculture - how peak oil could lead to starvation
• Overpopulation: What you can do.
• National Geographic article on overpopulation
• Population and the Environment: The Global Challenge
• World Scientists' Warning to Humanity
• Too Many People? By Dr Jacqueline Kasun
• Catholic Social Teaching On Population Growth An unofficial summary
• Theories of population - from the Catholic Encyclopedia
• Article about overpopulation
• Lecture on population growth over human history