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Many studies have tried to estimate the world's sustainable population for humans, that is, the maximum population the world can host. [5] A 2004 meta-analysis of 69 such studies from 1694 until 2001 found the average predicted maximum number of people the Earth would ever have was 7.7 billion people, with lower and upper meta-bounds at 0.65 and 9.8 billion people, respectively.
Neo-Malthusians and eugenicists popularised the use of the words to describe the number of people the Earth can support in the 1950s, [9] although American biostatisticians Raymond Pearl and Lowell Reed had already applied it in these terms to human populations in the 1920s. [citation needed]
Many prominent personalities, such as Bertrand Russell, Margaret Sanger (1939), John D. Rockefeller, Frederick Osborn (1952), Isaac Asimov, Arne Næss [37] and Jacques Cousteau have also advocated for population planning. Today, a number of influential people advocate population planning such as these: David Attenborough [38]
The notion that space is limited has been decried by skeptics, [174] who point out that the Earth's population of roughly 6.8 billion people could comfortably be housed an area comparable in size to the state of Texas in the United States (about 269,000 square miles or 696,706.80 square kilometres). [175]
Joel Ephraim Cohen NAS AAA&S APS CFR AAAS (born February 10, 1944) is a mathematical biologist.He is currently Abby Rockefeller Mauzé Professor of Populations at the Rockefeller University in New York City and at the Earth Institute of Columbia University, where he holds a joint appointment in the Department of Earth and Environmental Sciences, the Department of Ecology, Evolution and ...
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How Many People Can the Earth Support? New York: Norton and Co. Dyball, R. and Newell, B. 2015 Understanding Human Ecology: A Systems Approach to Sustainability London, England: Routledge. Henderson, Kirsten, and Michel Loreau. "An ecological theory of changing human population dynamics." People and Nature 1.1 (2019): 31–43. Eisenberg, E. 1998.
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