COLOP Date Stamp Classic Line 2100/4 Date in Numbers Imprint Colour Black 17 x 8 x 5.3 cm

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From 2020 to 2050, the eight highlighted countries are expected to account for about half of the world's projected population increase: India, Nigeria, the Democratic Republic of the Congo, Pakistan, Ethiopia, Tanzania, Egypt, and Indonesia. [5] [6] Population projections of the largest metropolitan areas [ edit ] The most recent 2022 revision of the UN's World Population Prospects report [20] represents a departure from the pattern of the previous ten years and expects that a slowing of the population growth rate will lead to a population peak of 10.4 billion in the 2080s, after which it would then begin to slowly fall. This shift from earlier projections of peak population and predicted date of zero population growth comes from a more rapid drop in Africa’s birth rate than previous projections had expected. [21] For example, the 2012 report predicted that the population of Nigeria, Africa’s most populous country, would rise to 914 million by 2100; the 2022 report lowers that to 546 million, a reduction of 368 million. [16] [6] [21] Jose Rimon of Johns Hopkins University suggested, "We have been underestimating what is happening in terms of fertility change in Africa. Africa will probably undergo the same kind of rapid changes as east Asia did." [21] Drivers of population change [ edit ] K K = the carrying capacity of the population; defined by ecologists as the maximum population size that a particular environment can sustain. [27] Hopfenberg, Russell. " An expansion of the demographic transition model: the dynamic link between agricultural productivity and population." Biodiversity 15.4 (2014): 246–254.

Population Forecast to 2060 by International Futures hosted by Google Public Data Explorer" . Retrieved 2011-07-13. Population: 511 840 habitants au 1er janvier 2011", Le Portail des statistiques: Grand-Duché de Luxembourg, 3 May 2011. (in French) Retrieved 4 May 2011.Reimann, L., Vafeidis, A. T., Brown, S., Hinkel, J. & Tol, R. S. J. Mediterranean UNESCO World Heritage at risk from coastal flooding and erosion due to sea-level rise. Nat. Commun. 9, 4161 (2018).

Carrington, Damien (September 18, 2014). "World population to hit 11bn in 2100 – with 70% chance of continuous rise". The Guardian . Retrieved December 19, 2016.What is 2100 Divided by 4 Using Long Division?". VisualFractions.com, http://visualfractions.com/calculator/long-division/what-is-2100-divided-by-4-using-long-division/. Accessed 28 November, 2023. Coe, A. L. et al. The Sedimentary Record of Sea-Level Change (Cambridge University Press, Cambridge, UK, 2003). Korotayev, A. V.; Malkov, A. S. (2016). "Compact Mathematical Model of the World System Economic and Demographic Growth, 1 CE–1973 CE". International Journal of Mathematical Models and Methods in Applied Sciences. 10: 200–209. a b c "World Population Prospects 2022, Standard Projections, Compact File, Variant tab, Total Fertility Rate column". United Nations Department of Economic and Social Affairs, Population Division. 2022.

Cao, T. & Han, D. Song X. Past, present, and future of global seawater intrusion research: A bibliometric analysis. J. Hydrol. 603, 126844 (2021).Kirwan, M. L. & Megonigal, J. P. Tidal wetland stability in the face of human impacts and sea-level rise. Nature 504, 53–60 (2013). Crist, Eileen; Ripple, William J.; Ehrlich, Paul R.; Rees, William E.; Wolf, Christopher (2022). "Scientists' warning on population" (PDF). Science of the Total Environment. 845: 157166. Bibcode: 2022ScTEn.845o7166C. doi: 10.1016/j.scitotenv.2022.157166. PMID 35803428. S2CID 250387801. According to the UN, of the predicted growth in world population between 2020 and 2050, all of that change will come from less developed countries, and more than half will come from sub-Saharan Africa. [106] Half of the growth will come from just eight countries, five of which are in Africa. [103] [104] The UN predicts that the population of sub-Saharan Africa will double by 2050. [106] The Pew Research Center observes that 50% of births in the year 2100 will be in Africa. [107] Other organizations project lower levels of population growth in Africa, based particularly on improvement in women's education and successful implementation of family planning. [108] 2. World population prospects, 2022 projection [109]During the remainder of this century some countries will see population growth, some will see population decline. For example the UN projects that Nigeria will gain about 340 million people, about the present population of the US, to become the 3 rd most populous country, and China will lose almost half of its population. [103] [104] a b "World Population Prospects - Population Division - United Nations". Archived from the original on 2011-05-07 . Retrieved 2012-05-28. Randers, Jørgen (2012). 2052: A Global Forecast for the Next Forty Years. Vermont: Chelsea Green Publishing. p.62.

a b c Roser, Max; Ritchie, Hannah; Ortiz-Ospina, Esteban (2013-05-09). "World Population Growth". Our World in Data. Projections of population beyond the year 2050 tend to vary depending on the organization making them because each make their own assumptions of the drivers of population change: fertility, mortality and migration. Population growth alongside increased consumption is a driver of environmental concerns, such as biodiversity loss and climate change, [12] [13] due to overexploitation of natural resources for human development. [14] International policy focused on mitigating the impact of human population growth is concentrated in the Sustainable Development Goals which seek to improve the standard of living globally while reducing the impact of society on the environment while advancing human well-being. [ citation needed] Population [15] Years The UN Population Division report of 2022 projects world population to continue growing after 2050, although at a steadily decreasing rate, to peak at 10.4 billion in 2086, and then to start a slow decline to about 10.3 billion in 2100 with a growth rate at that time of -0.1%. [6] Di Matteo, G., Nardi, P., Grego, S. & Guidi, C. Bibliometric analysis of Climate Change Vulnerability Assessment research. Environ. Syst. Decisions 38, 508–516 (2018).a b Kaneda, Toshiko; Falk, Marissa; Patierno, Kaitlyn (March 27, 2021). "Understanding and Comparing Population Projections in Sub-Saharan Africa". Population Reference Bureau. The main driver of long-term future population growth on this planet is projected to be the continuing evolution of fertility and mortality. [101] Estimated size of human population from 10,000 BCE to 2000 CE The majority of world population growth today is occurring in less developed countries. See also [ edit ] Smil, Vaclav (1999). "Detonator of the population explosion" (PDF). Nature. 400 (6743): 415. Bibcode: 1999Natur.400..415S. doi: 10.1038/22672. S2CID 4301828.