نظرية أولدوفاي
مراجع

1 2 3  Duncan (1996)
1 2 3 4  Duncan (2007)
1 2  Duncan, R. C. (1989). Evolution, technology, and the natural environment: A نظرية الحقل الموحد of التاريخ البشري. Proceedings of the Annual Meeting, American Society of Engineering Educators: Science, Technology, & Society, 14B1-11 to 14B1-20.
1 2 3 4 5 6 7 8 9 10 11 12  Duncan (2009)
↑  Prieto (2004)
1 2  García (2006)
↑  Diamond (2005)
↑  Heinberg (2005)
↑  Prieto (2007)
↑  Southern Poverty Law Center (2001). "Anti-Immigration Groups". Southern Poverty Law Center, Intelligence Report. ج. 101. مؤرشف من الأصل في 2022-06-18. اطلع عليه بتاريخ 2022-06-03.
↑  Chang, Man Yu; Foladori, Guillermo; Pierri, Naína (2005). ¿Sustentabilidad?: Desacuerdos sobre el desarrollo sustentable (بالإسبانية). Miguel Ángel Porrua. p. 219. ISBN:9707016108. According to the Cornucopians, in order to stop an activity potentially harmful to the physical environment or human health, irrefutable scientific evidence is necessary, which costs a lot of time and money and, for this reason, mere prevention may not justify the very high social cost perpetrated.
↑  Fresco، Jacque. "Zeitgeits: The Movie - Transcript". مؤرشف من الأصل في 2010-05-09. اطلع عليه بتاريخ 2022-06-03. At present, we don't have to burn fossil fuels. We don't have to use anything that would contaminate the environment. There are many sources of energy available.
↑  Duncan, R. C. (1993). The life-expectancy of industrial civilization: The decline to global equilibrium. Population and Environment, 14(4), 325-357.
↑  Duncan, Richard C. (2000). "The Peak Of World Oil Production And The Road To The Olduvai Gorge"
↑  Duncan, R. C. (2005-2006) The Olduvai Theory Energy, Population, and Industrial Civilization نسخة محفوظة 2006-05-24 على موقع واي باك مشين., The Social Contract.
↑  Duncan (2007, p. 147)
↑  Duncan (2007, pp. 142-147)
↑  Chefurka، Paul (2007). "Population, The Elephant in the Room". مؤرشف من الأصل في 2022-06-18. اطلع عليه بتاريخ 2022-06-03. Industrial agriculture as practiced in the 20th and 21st centuries is supported by three legs: mechanization, pesticides/fertilizers and genetic engineering. Of those three legs, the first two are directly dependent on petroleum to run the machines and natural gas to act as the chemical feedstock...
↑  Hayden، Howard C. (2004). "The Solar Fraud: Why Solar Energy Won't run the World". Pueblo West: Vales Lake Publishing. The Earth's population has far exceeded the number that solar sources could sustain. Likewise, the agricultural technology that existed just a century ago could not possibly feed a population of billions. For those who long for the glorious old days of a population below one billion, it is useful to point out that the only way to this end is the death of many billions of those now alive, even if no children were born in the next thirty years.
↑  McCluney، R. (2004). "The Fate of Humanity". Pueblo West: Vales Lake Publishing. مؤرشف من الأصل في 2018-04-19. اطلع عليه بتاريخ 2022-06-18. My warning for today: we are systematically ignoring the life support system of planet Earth. We have exceeded the carrying capacity of the planet by a factor of 3. For everyone to live as Americans do, it would take three Earths.
↑  Grant، L. (2005). "The collapsing bubble: Growth and Fossil Energy". Santa Anna: Seven Locks Press. The population of the less developed world has grown by two-thirds since 1950 and was poor in 1950. The need for a fundamental change in the ratio of resources to people in poor countries can, by itself, justify an optimal world population figure of one billion. Barring a catastrophe, it could take centuries to reach such figures, even with a determined global effort.
↑  Pfeiffer، Dale Allen (2006). "Eating Fossil Fuels: Oil, Food and the Coming Crisis in Agriculture". مؤرشف من الأصل في 2022-06-07. اطلع عليه بتاريخ 2022-06-18. Some studies suggest that without fossil fuel-based agriculture, the U.S. would only be able to support about two-thirds of its current population. For the planet as a whole, the sustainable figure is thought to be around two billion.
↑  Thompson، P. (2006). "The Twilight of the Modern World: The four stages of the post oil breakdown". مؤرشف من الأصل في 2010-02-05. Sooner or later, all remnants of our society will have vanished, turned into ruins to rival those of the Aztecs and Mayans. By then, all those who have been unable to convert to a sustainable, self-sufficient way of life may have perished, leaving only those living in independent communities to carry on the human story. The human population could fall to as few as one billion, scattered in farmland oases among deserts of buildings, rusting vehicles and jungles.
↑  Duncan (2007, pp. 141-142)
↑  OECD (2009, p. 313)
↑  OECD (2008)
↑  OECD (2009)
↑  OECD (2010). "OECD Composite Leading Indicators News Release" (PDF). Paris. مؤرشف (PDF) من الأصل في 2022-06-03. اطلع عليه بتاريخ 2022-06-03.
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