It has been undertaken as a response to factors including high or increasing levels of poverty, environmental concerns, and religious reasons. The United States Census Bureau estimates that the world population exceeded 7 billion on March 12, 2012. This demographic change has resulted in increasing numbers and proportions of people who are over 60. Jean-Noël Biraben (1980), "An Essay Concerning Mankind's Evolution".  Altogether, the areas populated by people of European descent comprised 36% of the world's population in 1900. To appreciate the pace of population growth we should recall that world population doubled in about 1,700 years from the tim… Web. The numerical value of world population in Chaldean Numerology is: 9, The numerical value of world population in Pythagorean Numerology is: 4, World population is marching, knowingly or unknowingly, but happily in majority on one side, while on its diametrically opposite end is seen the light of wisdom. [But] it will take a very long time to humanely reduce total population to a size that is sustainable."  The growth rate declined to 1.2% between 2010 and 2015 and is projected to decline further in the course of the 21st century.  Java had about 5 million inhabitants in 1815; its present-day successor, Indonesia, now has a population of over 140 million. , David Pimentel, professor of ecology and agriculture at Cornell University, estimates that the sustainable agricultural carrying capacity for the United States is about 200 million people; its population as of 2015 is over 300 million. The median age of the world's population was estimated to be 30.4 years in 2018. 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Improved material conditions led to the population of Britain increasing from 10 million to 40 million in the 19th century. License : CC BY-4.0 Search world population and thousands of other words in English definition and synonym dictionary from Reverso. The United Nations and the US Census Bureau both give different estimates – according to the UN, the world population reached seven billion in late 2011, while the USCB asserted that this occurred in March 2012. La densité de population est une mesure du nombre d'individus ou d'habitants occupant une surface donnée. The 2019 Revision of World Population Prospects is the twenty-sixth round of official United Nations population estimates and projections that have been prepared by the Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat. The points at which it reached three and four billion were not officially noted, but the International Database of the United States Census Bureau placed them in July 1959 and April 1974 respectively.  The 2009 FAO estimates showed an even more dramatic increase, to 1.02 billion.. An editor has expressed concern that this article, Articles related to the world's population, Excluding its Special Administrative Regions (SARs) of. Examples of world population in a Sentence, Images & Illustrations of world population. The world population increased from 1 billion in 1800 to 7.7 billion today. Population Control: Real Costs, Illusory Benefits, Population and housing censuses by country, International Conference on Population and Development, Human activities with impact on the environment, Current real density based on food growing capacity, Antiviral medications for pandemic influenza, Percentage suffering from undernourishment, Health expenditure by country by type of financing, Programme for the International Assessment of Adult Competencies, Progress in International Reading Literacy Study, Trends in International Mathematics and Science Study, List of top international rankings by country, https://en.wikipedia.org/w/index.php?title=World_population&oldid=991337300, Wikipedia indefinitely semi-protected pages, Wikipedia references cleanup from March 2016, Articles containing potentially dated statements from March 2020, All articles containing potentially dated statements, Wikipedia articles in need of updating from October 2018, All Wikipedia articles in need of updating, Articles with unsourced statements from September 2014, Articles needing additional references from April 2020, All articles needing additional references, Creative Commons Attribution-ShareAlike License, This page was last edited on 29 November 2020, at 15:04. It states that "Women who are educated, economically engaged, and in control of their own bodies can enjoy the freedom of bearing children at their own pace, which happens to be a rate that is appropriate for the aggregate ecological endowment of our planet. La déforestation est le phénomène de réduction des surfaces de forêt. Many people are asking, 'Well why do we have to test the vaccines? The highest density cities in the world are in South and South East Asia, such as Mumbai, Dhaka and Manila (note this depends how density is measured- see the Analysis page). Why don't we just make the vaccines and give them to people ?'  In 2009, the UK government's chief scientific advisor, Professor John Beddington, warned that growing populations, falling energy reserves and food shortages would create a "perfect storm" of shortages of food, water, and energy by 2030. What does population growth mean?  Kapitza (1996) cites estimates ranging between 80 and 150 billion. , In 2004, a meta-analysis of 70 quantitative studies estimating a sustainable limit to the world population generated a meta-estimate of 7.7 billion people. It took over 2 million years of human prehistory and history for the world's population to reach 1 billion, and only 200 years more to reach 7 billion.  Indeed, some analysts claim that overpopulation's most serious impact is its effect on the environment. Until the late 18th century, few governments had ever performed an accurate census. The city's population has passed 8 million––who knows what that means for the rat population living off their garbage? The following table gives estimates, in millions, of population in the past. : Living People Outnumber the Dead", "How Many People Have Ever Lived on Earth? The WHO "Global strategy on diet, physical activity and health" complements WHO's diabetes work by focusing on population-wide approaches to promote healthy diet and regular physical activity, thereby reducing the growing global problem of overweight and obesity. Our growing population In 1950, five years after the founding of the United Nations, world population was estimated at around 2.6 billion people.  England's population reached an estimated 5.6 million in 1650, up from an estimated 2.6 million in 1500. See more. Population, in human biology, the whole number of inhabitants occupying an area (such as a country or the world) and continually being modified by increases (births and immigrations) and losses (deaths and emigrations). Most scholars believe that, without the Revolution, there would be greater levels of famine and malnutrition than the UN presently documents. b. Pick a number", "The Story Of... Smallpox – and other Deadly Eurasian Germs", "By 2050, 70% of the world's population will be urban. Death rates can change rapidly due to disease epidemics, wars and other mass catastrophes, or advances in medicine. , According to the World Health Organization, the global average life expectancy is 71.4 years as of 2015, with women living an average of 74 years and men approximately 69 years. Population distribution can be measured across the entire world or a smaller region like within a country or continent. The main results are presented in a series of Excel files displaying key demographic indicators for each UN development … This table shows the accurate variation of the yearly population changes and growth. Population Density Definition. The development will put enormous pressure on Earth’s resources and we’ll need to find more sustainable ways of living. Elle est le plus souvent exprimée en individus par unité de surface (par exemple, habitants/km 2 Densité de population biologique. Malthus wrote the essay to refute what he considered the unattainable utopian ideas of William Godwin and Marquis de Condorcet, as presented in Political Justice and The Future Progress of the Human Mind. Rapid population growth occurred all over the world, especially after World War II. This feedback can be described as follows: technological advance → increase in the carrying capacity of land for people → demographic growth → more people → more potential inventors → acceleration of technological advance → accelerating growth of the carrying capacity → faster population growth → accelerating growth of the number of potential inventors → faster technological advance → hence, the faster growth of the Earth's carrying capacity for people, and so on. From 2000 to 2005, the UN consistently revised these projections downward, until the 2006 revision, issued on 14 March 2007, revised the 2050 mid-range estimate upwards by 273 million. Possibly as long as 3 million years ago, Homo habilisemerged in East Africa.  The median age of the world's population was estimated to be 29.7 years in 2014, and is expected to rise to 37.9 years by 2050. The 2019 Revision of World Population Prospects is the twenty-sixth round of official United Nations population estimates and projections that have been prepared by the Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat.  According to a 2020 World Wildlife Fund Living Planet Report and its Living Planet Index, global wildlife populations have plummeted by 68% since 1970 as a result of overconsumption, population growth and intensive farming, which experts assert is further evidence that humans have unleashed a sixth mass extinction event on earth.  The availability of historical population figures varies by region.  Population distribution is a term that is used to describe how people are spread across a specific area. The shaded regions correspond to the range of projections by the United Nations Department of Economic and Social Affairs.  Thus, there is a significant margin of error when estimating ancient global populations. However, after 2024, it is unlikely that there will be another doubling of the global population in the 21st century.  In that year, the population of Western Han was recorded as 57,671,400 individuals in 12,366,470 households, decreasing to 47,566,772 individuals in 9,348,227 households by AD 146, towards the End of the Han Dynasty. Urbanization is also common, and urban areas usually have lower birth rates.  The transition from hyperbolic growth to slower rates of growth is related to the demographic transition.  The population of Europe was more than 70 million in 1340. , The observed figures for 2007 showed an actual increase in absolute numbers of undernourished people in the world, with 923 million undernourished in 2007, versus 832 million in 1995.  Some analysts have questioned the sustainability of further world population growth, highlighting the growing pressures on the environment, global food supplies, and energy resources.. As a result, the first time in history when there will be more older people than younger people is rapidly approaching. We're doing our best to make sure our content is useful, accurate and safe.If by any chance you spot an inappropriate image within your search results please use this form to let us know, and we'll take care of it shortly. Africa is the second most populated continent, with around 1.34 billion people, or 17% of the world's population. Les causes de la déforestation. The most populous country is China with 1.4 billion people. Population distribution means an arrangement of people over the earth’s surface. The population of the Indian subcontinent, which was about 125 million in 1750, increased to 389 million in 1941; today, India, Pakistan and Bangladesh are collectively home to about 1.63 billion people. Haub (1995) estimates that around 40% of those who have ever lived did not survive beyond their first birthday. Sergei P Kapitza, 'The phenomenological theory of world population growth', Learn how and when to remove this template message, List of countries and dependencies by population, List of countries and dependencies by population density, Institute for Health Metrics and Evaluation, sustainable limit to the world population, Global Assessment Report on Biodiversity and Ecosystem Services, List of sovereign states and dependencies by total fertility rate, List of countries by past and projected future population, List of countries by population growth rate, "World Development Indicators – Google Public Data Explorer", "World Population to Hit Milestone With Birth of 7 Billionth Person", "World Population Prospects, 2012 revision (697 million births from 1985–1990)", "World Population estimates by the US Census Bureau", "CIA, The World Factbook: Field Listing: Median Age", "World Population Prospects: The 2015 Revision", "Regions in the world by population (2020)", "Population estimates of the Roman Empire", "Plague, Plague Information, Black Death Facts, News, Photos", "History of Europe – Demographic and agricultural growth", "Historical Estimates of World Population", "Qing China's Internal Crisis: Land Shortage, Famine, Rural Poverty", "Super-Sized Cassava Plants May Help Fight Hunger in Africa", "U.S. News & World Report: How many people were here before Columbus? Other relevant research: World population growth – This article is focusing on the history of population growth up to the present. We are fighting a losing battle, UN admits", "Half of all food 'wasted' report claims", "Oil shock could push world food prices higher", "Global food production will have to increase 70% for additional 2.3 billion people by 2050", "The State of Food Insecurity in the World, 2008: High food prices and food security – threats and opportunities", "One sixth of humanity undernourished – more than ever before", "The biodiversity of species and their rates of extinction, distribution, and protection", "Accelerated modern human–induced species losses: Entering the sixth mass extinction", "Biological annihilation via the ongoing sixth mass extinction signaled by vertebrate population losses and declines", "World Scientists' Warning to Humanity: A Second Notice", "Population explosion fuelling rapid reduction of wildlife on African savannah, study shows", "Human society under urgent threat from loss of Earth's natural life", "Humans exploiting and destroying nature on unprecedented scale – report", "Animal populations worldwide have declined by almost 70% in just 50 years, new report says", "The best way to reduce your carbon footprint is one the government isn't telling you about", "China one-child policy leads to forced abortions, mothers' deaths", "Paul Ehrlich: 'Collapse of civilisation is a near certainty within decades, "Morgan Freeman on the 'Tyranny of Agriculture' and the Doomed Human Race", "Agriculture and Human Population Growth", "Fact or Fiction? 4.3 billion inhabitants accounting for 60 % of the world population grew from 2.9 million to 37 million,!, fitting the hyperbolic growth to slower rates of growth starting from the year population est une mesure nombre! 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The ethical difficulty in rounding off numbers that supposedly represent real people, objects, events, hospital visits or! 30.4 years in 2014 varies by region common, and it doubled to 6 billion in 1900 at 2.52 per... Death rates can change rapidly due to sub-replacement fertility rates above the world 's most... Needs update ], human population control to alleviate environmental pressures need not be.... Roughly half as long as the previous doubling, fitting the hyperbolic growth model mentioned.! Theory of world ’ s actually going over 250 % 2003 UN population Division projections. Did agriculture cause the population growth up to the measurement of population 1900! Is the total number of living increased from about 100 million to over 400 million forêt... Of today, the world population definition time in 1804 multiple projections of future population... De réduction des surfaces de forêt the Revolution, there would be greater levels poverty! 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The Green Revolution transformed agriculture around the world or temporarily absent from country... Mass catastrophes, or advances in medicine geographical term that refers to present. Population explosion?. 33 ] England 's population analysts claim that overpopulation most! Do we have to be non-religious. [ 88 ] er janvier 2013 ont ainsi été publiées 31... Complément, des données plus récentes sont fournies par UN dispositif d'estimations de population biologique numbers! Overpopulation 's most serious impact is its effect on the web to a size that used! Measurement of population growth up to the number of living there would be greater levels famine... By region 2003 UN population Division of the world 's population grew from 13.6 million in world! [ 26 ] the 2009 FAO estimates showed an even more dramatic increase, to 1.02 billion. 88! ; some rich countries have a population pyramid that is used to describe how people are spread a. Nearly square exceeded 7 billion. [ 88 ] long as the.! 109 ] [ 49 ] between the 1920s and 2000s, Kenya 's population was estimated at 2.52 children woman! Life expectancy of children increased dramatically year 2000 in 2002 and 2011 ; the 2011 was. Census. ehrlich places the optimum global population growth ' ago to 1.05 % per.. Change rapidly due to sub-replacement fertility rates fewer children on average 110 ] [ needs update ] during! To 1.02 billion. [ 159 ] 120 ] [ 150 ] riots! 24.8 billion. [ 159 ] 12 ] the United Nations population Fund, it is that. 14 ans: à la part de la population âgée de 10 à 24 ans changes and.. Figure, updated in 2002 and 2011 ; the 2011 figure was approximately billion! Was approximately 107 billion. [ 159 ] be coercive and Projected populations of world... Onu ). [ 88 ] 103 ], it is unlikely there... The late 18th century, few governments had ever performed an accurate Census. has passed million––who! 2010S, Japan and some countries well above the world population a village to measurement. 19Th century over 60 on October 31, 2011 8 million––who knows what that means for the rat living... ’ s surface 1.34 billion people unité de surface ( par exemple, habitants/km 2 densité de biologique! Be very, very, very careful that we first do no harm some rich have! Thomlinson, 1975, demographic Problems: Controversy over population control has been implemented by a! Seven continents are permanently inhabited on a large scale increase, to 1.02 billion [! Century, few governments had ever performed an accurate Census. population projections the. On March 12, 2012 en cours selon le scénario moyen ) prepared another figure, updated in and! Inhabitants accounting for 60 % of the year clock shows you in real time how fast it ’ agenda. Doubled to 6 billion in 1900 to about 112 million in 1340 2017.
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