World population (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "World population" in English language version.

refsWebsite

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80web.archive.org

1^st place

30un.org

97^th place

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14doi.org

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10books.google.com

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9harvard.edu

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8nih.gov

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7census.gov

45^th place

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7bbc.co.uk

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6semanticscholar.org

11^th place

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5cia.gov

89^th place

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5archive.org

6^th place

4ourworldindata.org

2,263^rd place

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4worldcat.org

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4britannica.com

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3jstor.org

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3theguardian.com

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3worldometers.info

2,099^th place

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3prb.org

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2nytimes.com

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2time.com

61^st place

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2columbia.edu

488^th place

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2telegraph.co.uk

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2worldbank.org

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2science.org

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2youtube.com

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2who.int

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1ghostarchive.org

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1tulane.edu

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1nationalgeographic.com

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1wikiwix.com

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1learnnc.org

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1independent.co.uk

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1about.com

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1petersoninstitute.org

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1migrationinformation.org

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1statista.com

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1wsj.com

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1visualcapitalist.com

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1pewforum.org

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1citypopulation.de

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1france24.com

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1stats.gov.cn

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1bps.go.id

1,046^th place

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1ibge.gov.br

313^th place

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1gov.bd

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1themoscowtimes.com

1,388^th place

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1bbc.com

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1energybulletin.net

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1washington.edu

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1umich.edu

459^th place

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1sciencedaily.com

993^rd place

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1dw.com

204^th place

353^rd place

1oregonstate.edu

2,041^st place

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1greenillusions.org

low place

1urss.ru

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1arxiv.org

69^th place

59^th place

1dl.ac.uk

low place

1iiasa.ac.at

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1sciam.com

6,119^th place

6,509^th place

1nicic.gov

low place

1rpi.edu

7,240^th place

4,476^th place

1populationmedia.org

low place

1sciencedirect.com

149^th place

178^th place

1tandfonline.com

507^th place

429^th place

1handle.net

102^nd place

76^th place

1euroscientist.com

low place

1nationalgeographic.org

2,660^th place

2,078^th place

1affaritaliani.it

5,661^st place

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1ishmael.org

low place

about.com

geography.about.com

"US population through history". About.com. Archived from the original on 13 January 2012. Retrieved 14 April 2012.

affaritaliani.it

Rosa, Daniele (2019). "Nel 2050 gli italiani saranno 20 milioni meno secondo l'Onu [Translation: In 2050 the Italians will be 20 million less, according to the UN]". Affaritaliani. Uomini & Affari Srl.

archive.org

600 million: Simon Gray, The Happiness of States (1818), p. 356 Archived 6 June 2019 at the Wayback Machine. 800 million: Gordon Hall, Samuel Newell, The Conversion of the World (1818), p. 10 Archived 6 June 2019 at the Wayback Machine. 800 to 1000 million: John Redman Coxe, Considerations Respecting the Recognition of Friends in Another World (1845), p. 21 (footnote with references).
Brabazon, James (2000). Albert Schweitzer: a biography. Syracuse University Press. p. 242. ISBN 978-0-8156-0675-8.
Arthur C. Aufderheide; Conrado Rodríguez-Martín & Odin Langsjoen (1998). The Cambridge encyclopedia of human paleopathology. Cambridge University Press. p. 205. ISBN 978-0-521-55203-5.
Buer, Mabel C. (1926). Health, Wealth and Population in the Early Days of the Industrial Revolution. London: George Routledge & Sons. p. 30. ISBN 978-0-415-38218-2.
Ron Nielsen (2006). The Little Green Handbook. New York: Picador. ISBN 978-0-312-42581-4.

arxiv.org

Introduction to Social Macrodynamics. Archived 10 February 2012 at the Wayback Machine. Andrey Korotayev et al. For a rigorous mathematical analysis of this issue, see "A Compact Mathematical Model of the World System Economic and Demographic Growth, 1 CE – 1973 CE". Archived 17 February 2019 at the Wayback Machine.

bbc.co.uk

"The Foundling Hospital". BBC History. 5 October 2012. Archived from the original on 17 June 2013. Retrieved 22 April 2013.
"Victorian Medicine – From Fluke to Theory". BBC History. 1 February 2002. Archived from the original on 5 March 2013. Retrieved 17 February 2013.
"Population seven billion: UN sets out challenges". BBC News. 26 October 2011. Archived from the original on 26 October 2011. Retrieved 27 October 2011.
"Global weight gain more damaging than rising numbers". BBC. 18 June 2012. Archived from the original on 4 February 2013. Retrieved 12 February 2013.
Fewer than 15,000 individuals, according to the Toba catastrophe theory, though this theory has been criticized by some scientists. See: "Toba super-volcano catastrophe idea "dismissed"". BBC News. 30 April 2013. Archived from the original on 7 January 2015. Retrieved 21 March 2015.

news.bbc.co.uk

"UK population breaks through 60m". BBC News. 24 August 2006. Archived from the original on 8 February 2009. Retrieved 14 April 2012.
"The limits of a Green Revolution?". BBC News. 29 March 2007. Archived from the original on 28 July 2011. Retrieved 1 August 2010.

bbc.com

"World Population Day: India will overtake China in 2023, says the UN". bbc.com. 11 July 2022. Retrieved 14 April 2023.

books.google.com

"The population of the world, which Sir W. P. in 1682, stated at only 320 millions, has been estimated by some writers at about 730 million, by others, at upwards of 900 million; Mr. Wallace, of Edinburgh, conjectured it might amount to 1 billion, and this number has since generally been adopted who have noticed the subject;" The Monthly Magazine 4 (July–December 1797), p. 167.
600 million: Simon Gray, The Happiness of States (1818), p. 356 Archived 6 June 2019 at the Wayback Machine. 800 million: Gordon Hall, Samuel Newell, The Conversion of the World (1818), p. 10 Archived 6 June 2019 at the Wayback Machine. 800 to 1000 million: John Redman Coxe, Considerations Respecting the Recognition of Friends in Another World (1845), p. 21 (footnote with references).
Luc-Normand Tellier (2009). Urban world history: an economic and geographical perspective. p. 26. ISBN 978-2-7605-1588-8.
Horst R. Thieme (2003). Mathematics in population biology. Princeton University Press. p. 285. ISBN 978-0-691-09291-1.
Graziella Caselli; Gillaume Wunsch & Jacques Vallin (2005). Demography: Analysis and Synthesis, Four Volume Set: A Treatise in Population. Academic Press. p. 34. ISBN 978-0-12-765660-1.
Austin Alchon, Suzanne (2003). A pest in the land: new world epidemics in a global perspective. University of New Mexico Press. p. 31. ISBN 978-0-8263-2871-7. Archived from the original on 18 May 2016. Retrieved 15 November 2015.
Graziella Caselli; Gillaume Wunsch & Jacques Vallin (2005). Demography: Analysis and Synthesis, Four Volume Set: A Treatise in Population. Academic Press. p. 42. ISBN 978-0-12-765660-1.
Jay Winter, Emmanuel Sivan (2000). War and Remembrance in the Twentieth Century. Cambridge University Press. p. 64. ISBN 978-0521794367. Archived from the original on 4 September 2015. Retrieved 20 July 2015.
Mark Harrison (2002). Accounting for War: Soviet Production, Employment, and the Defence Burden, 1940–1945. Cambridge University Press. p. 167. ISBN 978-0-521-89424-1.
Peter P. Rogers; Kazi F. Jalal & John A. Boyd (2008). An Introduction To Sustainable Development. Earthscan. p. 53. ISBN 978-1849770477.

bps.go.id

"Mid Year Population (Thousand People)". Badan Pusat Statistik – Indonesia. Retrieved 22 November 2023.

britannica.com

"History of Europe – Demographic and agricultural growth". Encyclopædia Britannica. 2012. Archived from the original on 20 December 2012. Retrieved 17 December 2012.
"History of Europe – Demographics". Encyclopædia Britannica. Archived from the original on 23 July 2013. Retrieved 9 July 2013.
"Modernization – Population Change". Encyclopædia Britannica. Archived from the original on 6 April 2009. Retrieved 6 February 2013.
"Java (island, Indonesia)". Encyclopædia Britannica. Archived from the original on 10 November 2022. Retrieved 16 November 2022.

census.gov

"Historical Estimates of World Population". Census.gov. Archived from the original on 9 July 2012. Retrieved 12 November 2016.
"U.S. Census Bureau – World POPClock Projection". July 2013. Archived from the original on 18 November 2011. Retrieved 18 February 2018. The number on this page is automatically updated daily.
"Population Clock". Census.gov. Archived from the original on 17 November 2015. Retrieved 18 April 2020.
An approximation based on figures from different sources as listed at the US Census Bureau's Historical Estimates of World Population Archived 2 May 2019 at the Wayback Machine; see also *Kremer, Michael (1993). "Population Growth and Technological Change: One Million B.C. to 1990". The Quarterly Journal of Economics. 108 (3): 681–716. doi:10.2307/2118405. JSTOR 2118405.
An approximation based on figures from different sources as listed at the US Census Bureau's Total Midyear Population for the World: 1950–2050 Archived 21 May 2017 at the Wayback Machine
"Notes on the World POPClock and World Vital Events". US Census Bureau. Archived from the original on 2 October 2013. Retrieved 12 February 2013.
"World Population – Total Midyear Population for the World: 1950–2050". Census.gov. July 2015. Archived from the original on 21 May 2017. Retrieved 7 March 2016.

cia.gov

"World", The World Factbook, Central Intelligence Agency, 19 October 2021, retrieved 1 November 2021
"The World Factbook – Central Intelligence Agency". cia.gov. Archived from the original on 27 September 2011. Retrieved 8 January 2017.
"World - The World Factbook". CIA World Fact Book. Central Intelligence Agency. 20 February 2024. Retrieved 24 February 2024.
"Antarctica". The World Factbook. CIA. 19 June 2014. Retrieved 18 March 2015.
"Countries – The World Factbook". cia.gov. Retrieved 15 November 2022.

citypopulation.de

"USA: Combined Metropolitan Areas". City Population. August 2021. Retrieved 19 November 2021.

columbia.edu

afe.easia.columbia.edu

"Qing China's Internal Crisis: Land Shortage, Famine, Rural Poverty". Columbia University: Asia for Educators. 2009. Archived from the original on 8 July 2011. Retrieved 9 July 2013.
"China's Population: Readings and Maps". Columbia University: East Asian Curriculum Project. Archived from the original on 19 July 2011. Retrieved 18 December 2012.

dl.ac.uk

srs.dl.ac.uk

Kapitsa, Sergei P. (1996). "The phenomenological theory of world population growth". Physics-Uspekhi. 39 (1): 57–71. Bibcode:1996PhyU...39...57K. doi:10.1070/pu1996v039n01abeh000127. S2CID 250877833. Archived from the original on 11 May 2009. Retrieved 26 July 2013.

doi.org

Biraben, Jean-Noël (1979). "Essai sur l'évolution du nombre des hommes". Population. 34 (1): 13–25. doi:10.2307/1531855. ISSN 0032-4663. JSTOR 1531855. S2CID 143406315. Retrieved 11 February 2022.
Snow, D. R (16 June 1995). "Microchronology and Demographic Evidence Relating to the Size of Pre-Columbian North American Indian Populations". Science. 268 (5217): 1601–1604. Bibcode:1995Sci...268.1601S. doi:10.1126/science.268.5217.1601. PMID 17754613. S2CID 8512954.
Schran, Peter (1978). "China's demographic evolution 1850–1953 reconsidered". The China Quarterly. 75 (75): 639–646. doi:10.1017/S0305741000042594. JSTOR 652987. S2CID 154294204.
An approximation based on figures from different sources as listed at the US Census Bureau's Historical Estimates of World Population Archived 2 May 2019 at the Wayback Machine; see also *Kremer, Michael (1993). "Population Growth and Technological Change: One Million B.C. to 1990". The Quarterly Journal of Economics. 108 (3): 681–716. doi:10.2307/2118405. JSTOR 2118405.
Sweeney, Megan M.; Raley, R. Kelly (1 July 2014). "Race, Ethnicity, and the Changing Context of Childbearing in the United States". Annual Review of Sociology. 40: 539–558. doi:10.1146/annurev-soc-071913-043342. ISSN 0360-0572. PMC 4618673. PMID 26504262.
Gerland, P.; Raftery, A. E.; Ev Ikova, H.; Li, N.; Gu, D.; Spoorenberg, T.; Alkema, L.; Fosdick, B. K.; Chunn, J.; Lalic, N.; Bay, G.; Buettner, T.; Heilig, G. K.; Wilmoth, J. (14 September 2014). "World population stabilization unlikely this century". Science. 346 (6206). AAAS: 234–7. Bibcode:2014Sci...346..234G. doi:10.1126/science.1257469. ISSN 1095-9203. PMC 4230924. PMID 25301627.
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.84557166C. doi:10.1016/j.scitotenv.2022.157166. PMID 35803428. S2CID 250387801.
Kapitsa, Sergei P. (1996). "The phenomenological theory of world population growth". Physics-Uspekhi. 39 (1): 57–71. Bibcode:1996PhyU...39...57K. doi:10.1070/pu1996v039n01abeh000127. S2CID 250877833. Archived from the original on 11 May 2009. Retrieved 26 July 2013.
Lutz, Wolfgang; Sanderson, Warren; Scherbov, Sergei (19 June 1997). "Doubling of world population unlikely" (PDF). Nature. 387 (6635): 803–805. Bibcode:1997Natur.387..803L. doi:10.1038/42935. PMID 9194559. S2CID 4306159.
Curtin, Ciara (1 March 2007). "Fact or Fiction?: Living People Outnumber the Dead". Scientific American. 297 (3). Scientific American, Inc. (published September 2007): 126. Bibcode:2007SciAm.297c.126C. doi:10.1038/scientificamerican0907-126. PMID 17784634. Retrieved 4 August 2008. Note: text of paper publication slightly different from text of on-line publication.
Bystroff, Christopher (2021). "Footprints to singularity: A global population model explains late 20th century slow-down and predicts peak within ten years". PLoS ONE 16(5): e0247214. doi:10.1371/journal.pone.0247214
Li, Xiaoqiang; Dodson, John; Zhou, Jie; Zhou, Xinying (1 June 2009). "Increases of population and expansion of rice agriculture in Asia, and anthropogenic methane emissions since 5000BP". Quaternary International. Great Arc of Human Dispersal. 202 (1): 41–50. Bibcode:2009QuInt.202...41L. doi:10.1016/j.quaint.2008.02.009.
Kopnina, Helen; Washington, Haydn (2016). "Discussing why population growth is still ignored or denied". Chinese Journal of Population Resources and Environment. 14 (2): 133–143. Bibcode:2016CJPRE..14..133K. doi:10.1080/10042857.2016.1149296. hdl:1887/44662. Archived from the original on 4 January 2023.
Salmony, Steven E. (2006). "The Human Population: Accepting Species Limits". Environmental Health Perspectives, 114(1), A 17. doi:10.1289/ehp.114-a17.

dw.com

Silk, John (21 December 2019). "World's population to hit 7.75 billion in 2019". Deutsche Welle. Retrieved 17 July 2020.

energybulletin.net

"The Real Green Revolution". Energybulletin.net. Archived from the original on 22 April 2008. Retrieved 1 August 2010.

euroscientist.com

"What Causes Overpopulation?" Euroscientist. Euroscience: "When agriculture advances, and it becomes easier to feed the population, it continues to grow."

fao.org

Food and Agriculture Organization of the United Nations, The State of Food Insecurity in the World Archived 11 June 2014 at the Wayback Machine. WorldHunger.org. 2012. Retrieved 26 April 2012.

france24.com

York, Joanna (14 April 2023). "Spotlight on family planning as India surpasses China as world's most populous country". France 24. Retrieved 14 April 2023.

ghostarchive.org

Cave, Damien; Bubola, Emma; Sang-Hun, Choe (22 May 2021). "Long Slide Looms for World Population, With Sweeping Ramifications". The New York Times. ISSN 0362-4331. Archived from the original on 28 December 2021. Retrieved 23 May 2021.

gov.bd

bbs.portal.gov.bd

"Monthly Statidtical Bulletin – Bangladesh" (PDF). 2022-05-12-10-42-55414488d843db66462b5410cb439c22.pdf. Bangladesh Bureau of Statistics. February 2022. Archived (PDF) from the original on 8 June 2022. Retrieved 8 June 2022.

greenillusions.org

Zehner, Ozzie (2012). Green Illusions. Lincoln and London: University of Nebraska Press. pp. 187–331. Archived from the original on 29 November 2019. Retrieved 10 April 2020.

handle.net

hdl.handle.net

Kopnina, Helen; Washington, Haydn (2016). "Discussing why population growth is still ignored or denied". Chinese Journal of Population Resources and Environment. 14 (2): 133–143. Bibcode:2016CJPRE..14..133K. doi:10.1080/10042857.2016.1149296. hdl:1887/44662. Archived from the original on 4 January 2023.

harvard.edu

ui.adsabs.harvard.edu

Snow, D. R (16 June 1995). "Microchronology and Demographic Evidence Relating to the Size of Pre-Columbian North American Indian Populations". Science. 268 (5217): 1601–1604. Bibcode:1995Sci...268.1601S. doi:10.1126/science.268.5217.1601. PMID 17754613. S2CID 8512954.
Gerland, P.; Raftery, A. E.; Ev Ikova, H.; Li, N.; Gu, D.; Spoorenberg, T.; Alkema, L.; Fosdick, B. K.; Chunn, J.; Lalic, N.; Bay, G.; Buettner, T.; Heilig, G. K.; Wilmoth, J. (14 September 2014). "World population stabilization unlikely this century". Science. 346 (6206). AAAS: 234–7. Bibcode:2014Sci...346..234G. doi:10.1126/science.1257469. ISSN 1095-9203. PMC 4230924. PMID 25301627.
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.84557166C. doi:10.1016/j.scitotenv.2022.157166. PMID 35803428. S2CID 250387801.
Sebastien von Hoerner (1975). "Population Explosion and Interstellar Expansion". Journal of the British Interplanetary Society. 28 (28): 691–712. Bibcode:1975JBIS...28..691V.
Kapitsa, Sergei P. (1996). "The phenomenological theory of world population growth". Physics-Uspekhi. 39 (1): 57–71. Bibcode:1996PhyU...39...57K. doi:10.1070/pu1996v039n01abeh000127. S2CID 250877833. Archived from the original on 11 May 2009. Retrieved 26 July 2013.
Lutz, Wolfgang; Sanderson, Warren; Scherbov, Sergei (19 June 1997). "Doubling of world population unlikely" (PDF). Nature. 387 (6635): 803–805. Bibcode:1997Natur.387..803L. doi:10.1038/42935. PMID 9194559. S2CID 4306159.
Curtin, Ciara (1 March 2007). "Fact or Fiction?: Living People Outnumber the Dead". Scientific American. 297 (3). Scientific American, Inc. (published September 2007): 126. Bibcode:2007SciAm.297c.126C. doi:10.1038/scientificamerican0907-126. PMID 17784634. Retrieved 4 August 2008. Note: text of paper publication slightly different from text of on-line publication.
Li, Xiaoqiang; Dodson, John; Zhou, Jie; Zhou, Xinying (1 June 2009). "Increases of population and expansion of rice agriculture in Asia, and anthropogenic methane emissions since 5000BP". Quaternary International. Great Arc of Human Dispersal. 202 (1): 41–50. Bibcode:2009QuInt.202...41L. doi:10.1016/j.quaint.2008.02.009.
Kopnina, Helen; Washington, Haydn (2016). "Discussing why population growth is still ignored or denied". Chinese Journal of Population Resources and Environment. 14 (2): 133–143. Bibcode:2016CJPRE..14..133K. doi:10.1080/10042857.2016.1149296. hdl:1887/44662. Archived from the original on 4 January 2023.

ibge.gov.br

"IBGE | Projeção da população". Ibge.gov.br. Archived from the original on 4 February 2020. Retrieved 22 November 2019.

iiasa.ac.at

pure.iiasa.ac.at

Lutz, Wolfgang; Sanderson, Warren; Scherbov, Sergei (19 June 1997). "Doubling of world population unlikely" (PDF). Nature. 387 (6635): 803–805. Bibcode:1997Natur.387..803L. doi:10.1038/42935. PMID 9194559. S2CID 4306159.

imf.org

"World Economic Outlook (October 2021)". Imf.org. Retrieved 1 November 2021.

independent.co.uk

"A portrait of Britain in 2031". The Independent. 24 October 2007. Archived from the original on 9 December 2017. Retrieved 17 February 2013.

indexmundi.com

"World Demographics Profile 2012". Index Mundi. Archived from the original on 7 June 2012. Retrieved 22 May 2012.

ishmael.org

Quinn, Daniel: "The Question (ID Number 122)". Retrieved October 2014 from "Archived copy". Archived from the original on 4 March 2016. Retrieved 18 October 2014.{{cite web}}: CS1 maint: archived copy as title (link).

jstor.org

Biraben, Jean-Noël (1979). "Essai sur l'évolution du nombre des hommes". Population. 34 (1): 13–25. doi:10.2307/1531855. ISSN 0032-4663. JSTOR 1531855. S2CID 143406315. Retrieved 11 February 2022.
Schran, Peter (1978). "China's demographic evolution 1850–1953 reconsidered". The China Quarterly. 75 (75): 639–646. doi:10.1017/S0305741000042594. JSTOR 652987. S2CID 154294204.
An approximation based on figures from different sources as listed at the US Census Bureau's Historical Estimates of World Population Archived 2 May 2019 at the Wayback Machine; see also *Kremer, Michael (1993). "Population Growth and Technological Change: One Million B.C. to 1990". The Quarterly Journal of Economics. 108 (3): 681–716. doi:10.2307/2118405. JSTOR 2118405.

learnnc.org

"The Columbian Exchange". University of North Carolina. Archived from the original on 26 July 2011. Retrieved 18 December 2012.

migrationinformation.org

Jorge Durand (March 2004). "From Traitors to Heroes: 100 Years of Mexican Migration Policies". University of Guadalajara. Archived from the original on 5 May 2011. Retrieved 16 July 2013.

nationalgeographic.com

science.nationalgeographic.com

"Plague, Plague Information, Black Death Facts, News, Photos". National Geographic. Archived from the original on 22 July 2013. Retrieved 3 November 2008.

nationalgeographic.org

education.nationalgeographic.org

"The Development of Agriculture". National Geographic. 2022.

nicic.gov

info.nicic.gov

"How Many People Have Ever Lived on Earth?". National Institute of Corrections. Retrieved 4 March 2024.

nih.gov

pubmed.ncbi.nlm.nih.gov

Snow, D. R (16 June 1995). "Microchronology and Demographic Evidence Relating to the Size of Pre-Columbian North American Indian Populations". Science. 268 (5217): 1601–1604. Bibcode:1995Sci...268.1601S. doi:10.1126/science.268.5217.1601. PMID 17754613. S2CID 8512954.
Sweeney, Megan M.; Raley, R. Kelly (1 July 2014). "Race, Ethnicity, and the Changing Context of Childbearing in the United States". Annual Review of Sociology. 40: 539–558. doi:10.1146/annurev-soc-071913-043342. ISSN 0360-0572. PMC 4618673. PMID 26504262.
Gerland, P.; Raftery, A. E.; Ev Ikova, H.; Li, N.; Gu, D.; Spoorenberg, T.; Alkema, L.; Fosdick, B. K.; Chunn, J.; Lalic, N.; Bay, G.; Buettner, T.; Heilig, G. K.; Wilmoth, J. (14 September 2014). "World population stabilization unlikely this century". Science. 346 (6206). AAAS: 234–7. Bibcode:2014Sci...346..234G. doi:10.1126/science.1257469. ISSN 1095-9203. PMC 4230924. PMID 25301627.
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.84557166C. doi:10.1016/j.scitotenv.2022.157166. PMID 35803428. S2CID 250387801.
Lutz, Wolfgang; Sanderson, Warren; Scherbov, Sergei (19 June 1997). "Doubling of world population unlikely" (PDF). Nature. 387 (6635): 803–805. Bibcode:1997Natur.387..803L. doi:10.1038/42935. PMID 9194559. S2CID 4306159.
Curtin, Ciara (1 March 2007). "Fact or Fiction?: Living People Outnumber the Dead". Scientific American. 297 (3). Scientific American, Inc. (published September 2007): 126. Bibcode:2007SciAm.297c.126C. doi:10.1038/scientificamerican0907-126. PMID 17784634. Retrieved 4 August 2008. Note: text of paper publication slightly different from text of on-line publication.

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worldometers.info

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wsj.com

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