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Paul R. Ehrlich
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| birth_place = Philadelphia, Pennsylvania, U.S.| death_date = | death_place = | residence = Stanford, California, U.S. Entomology Population study>Population studies}}| work_institutions = Stanford Universityclass=nowrapUniversity of Pennsylvania {{Small > (Bachelor of Arts)}} > University of Kansas {{Small | (MA, PhD)}}}}Charles Duncan Michener>C. D. Michener| doctoral_students = | thesis_title = The Morphology, Phylogeny and Higher Classification of the Butterflies (Lepidoptera: Papilionoidea)| thesis_year = 1957| thesis_url =weblink| known_for = The Population BombAnne H. Ehrlich>December 1954}}| children = 1Crafoord Prize (1990) }}Paul Ralph Ehrlich (born May 29, 1932) is an American biologist, best known for his warnings about the consequences of population growth and limited resources.WEB, Mieszkowski, Katharine,weblink Do we need population control?, Salon.com, 2008-09-17, 2012-09-27, He is the Bing Professor of Population Studies of the Department of Biology of Stanford University and president of Stanford's Center for Conservation Biology.Ehrlich became well known for his controversial 1968 book The Population Bomb, which asserted that the world's human population would soon increase to the point where mass starvation ensued.BOOK,weblink Leaders from the 1960s: A Biographical Sourcebook of American Activism, Greenwood Press, 1994, 318, 9780313274145, 1994, Among the solutions he suggested in that book was population control, to be used if voluntary methods were to fail. Ehrlich has been criticized for his opinions; for example, Ronald Bailey termed Ehrlich an "irrepressible doomster". However, Carl Haub observed that Ehrlich's warnings had encouraged governments to change their policies to avert disaster. Ehrlich has acknowledged that some of what he predicted has not occurred, but maintains that his predictions about disease and climate change were essentially correct, and that human overpopulation is a major problem.

Early life, education, and academic career

(File:Paul R Ehrlich.png|thumb|Ehrlich circa 2010)Ehrlich was born in Philadelphia, Pennsylvania, the son of William Ehrlich and Ruth Rosenberg. His father was a shirt salesman, his mother a Greek and Latin scholarWEB, PAUL EHRLICH,weblink Radio National, ABC, 4 March 2013, Phillip Adams, Kate MacDonald, 19 November 2009, and public school teacher. Ehrlich's mother's Reform-Jewish German ancestors arrived in the United States in the 1840s, and his paternal grandparents emigrated there later from the Galician and Romanian part of the Austrian Empire.BOOK,weblink Inherit the Holy Mountain: Religion and the Rise of American Environmentalism, Oxford University Press, 2015, 260, 9780190697945, 2017-09-15, During his childhood his family moved to Maplewood, New Jersey, where he attended high school.Ehrlich earned a bachelor's degree in zoology from the University of Pennsylvania in 1953, an M.A. from the University of Kansas in 1955, and a Ph.D. from the University of Kansas in 1957, supervised by the prominent bee researcher Charles Duncan Michener (the title of his dissertation: "The Morphology, Phylogeny and Higher Classification of the Butterflies (Lepidoptera: Papilionoidea)").Ehrlich, Paul R., "The Morphology, Phylogeny and Higher Classification of the Butterflies (Lepidoptera: Papilionoidea)," Ph.D. dissertation, University of Kansas, May 1957. During his studies he participated with surveys of insects in the areas of the Bering Sea and Canadian Arctic, and then with a National Institutes of Health fellowship, investigated the genetics and behavior of parasitic mites. In 1959 he joined the faculty at Stanford University, being promoted to professor of biology in 1966. By training he is an entomologist specializing in Lepidoptera (butterflies); he published a major paper about the evolution of plants and insects.JOURNAL, Ehrlich, Paul R., Raven, Peter H., 1964, Butterflies and Plants: A Study in Coevolution, Evolution, 18, 4, 586–608, 10.2307/2406212, 2406212, He was appointed to the Bing Professorship in 1977.WEB, PAUL R. EHRLICH,weblink Paul R. Ehrlich Resume, Stanford University, 4 March 2013, Paul R. Ehrlich, 2001, Lewis, J. "Biologist Paul R. Ehrlich. Six billion and counting". Scientific American October 2000, pages 30, 32.He is president of the Center for Conservation Biology at Stanford University.WEB, Paul R. Ehrlich,weblink Center for Conservation Biology – Department of Biology, Stanford University, 4 March 2013, 2013, He is a fellow of the American Association for the Advancement of Science, the United States National Academy of Sciences, the American Academy of Arts and Sciences and the American Philosophical Society.

Overpopulation debate

{{Further|Human overpopulation}}(File:Population curve.svg|thumb|300px | The case for a population bomb: human population has dramatically increased.)(File:WorldPopGrowth.png|thumb|The case against a population bomb: Since the 1950s population growth rate has decreased, and is projected to decline further.)A lecture that Ehrlich gave on the topic of overpopulation at the Commonwealth Club of California was broadcast by radio in April 1967.WEB, Story: Paul Ehrlich, the Vindication of a Public Scholar.,weblink Spot.us (first published by The Earth Island Journal), American Public Media, 4 March 2013, Tom Turner, 2011, The success of the lecture caused further publicity, and the suggestion from David Brower the executive director of the environmentalist Sierra Club, and Ian Ballantine of Ballantine Books to write a book concerning the topic. Ehrlich and his wife, Anne H. Ehrlich, collaborated on the book, The Population Bomb, but the publisher insisted that a single author be credited.JOURNAL, Paul R. Ehrlich, Anne H. Ehrlich, The Population Bomb Revisited,weblink Electronic Journal of Sustainable Development, 2009, 1, 3, 63–71, September 26, 2012, Although Ehrlich was not the first to warn about population issues â€” concern had been widespread during the 1950s and 1960s â€” his charismatic and media-savvy methods helped publicize the topic.BOOK, Future Babble: Why Expert Predictions Fail â€“ and Why We Believe Them Anyway, Dan Gardner, McClelland and Stewart, 2010, Toronto,

Writings

The Population Bomb (1968)

The original edition of The Population Bomb began with this statement: "The battle to feed all of humanity is over. In the 1970s hundreds of millions of people will starve to death in spite of any crash programs embarked upon now. At this late date nothing can prevent a substantial increase in the world death rate ..."BOOK, Ehrlich, Paul R., The Population Bomb, Ballantine Books, 1968, Ehrlich argued that the human population was too great, and that while the extent of disaster could be mitigated, humanity could not prevent severe famines, the spread of disease, social unrest, and other negative consequences of overpopulation. By the end of the 1970s, this prediction proved to be incorrect. However, he continued to argue that societies must take strong action to decrease population growth in order to mitigate future disasters, both ecological and social.In the book Ehrlich presented a number of "scenarios" detailing possible future events, some of which have been used as examples of errors in the years since. Of these scenarios, Ehrlich has said that although, "we clearly stated that they were not predictions and that 'we can be sure that none of them will come true as stated,' (p. 72) – their failure to occur is often cited as a failure of prediction. In honesty, the scenarios were way off, especially in their timing (we underestimated the resilience of the world system). But they did deal with future issues that people in 1968 should have been thinking about." Ehrlich further states that he still endorses the main thesis of the book, and that its message is as apt now as it was in 1968.Ehrlich's opinions have evolved over time, and he has proposed different solutions to the problem of overpopulation. In The Population Bomb he wrote, "We must have population control at home, hopefully through a system of incentives and penalties, but by compulsion if voluntary methods fail. We must use our political power to push other countries into programs which combine agricultural development and population control." Voluntary measures he has endorsed include the easiest possible availability of birth control and abortion. In 1967 he had expressed his belief that aid should only be given to those countries that were not considered to be "hopeless" to feed their own populations.BOOK, Lomborg, Bjørn, The skeptical environmentalist : measuring the real state of the world, 2002, Cambridge Univ. Press, Cambridge, 978-0-521-01068-9, 350, In 1967 Paul Ehrlich predicted that the world was headed for massive starvation. In order to limit the extent of this, he believed – reasonably enough given his point of view – that aid should be given only to those countries that would have a chance to make it through. According to Ehrlich, India was not among them. We must "announce that we will no longer send emergency aid to countries such as India where sober analysis shows a hopeless imbalance between food production and population ...Our inadequate aid ought to be reserved for those which can survive.", The Skeptical Environmentalist,

The Population Explosion (1990)

In their sequel to The Population Bomb, the Ehrlichs wrote about how the world's growing population dwarfs the Earth's capacity to sustain current living standards. The book calls for action to confront population growth and the ensuing crisis:BOOK, Ehrlich, Paul R., Ehrlich, Anne H., The population explosion, 1990, Hutchinson, London, 978-0091745516, 39–40,weblink 20 July 2014,

Optimum Human Population Size (1994)

In this paper, the Ehrlichs discuss the 'optimal size' for human population, given current technological realities. They refer to establishing "social policies to influence fertility rates."Daily, Gretchen C.; Ehrlich, Anne H. and Ehrlich, Paul R. Optimum Human Population Size. Population and Environment: A Journal of Interdisciplinary Studies Volume 15, Number 6, July 1994 01994 Human Sciences Press.(File:Paul R. Ehrlich 2008.jpg|thumb|Ehrlich speaking in 2008)

After 2000

During a 2004 interview, Ehrlich answered questions about the predictions he made in The Population Bomb. He acknowledged that some of what he had published had not occurred, but reaffirmed his basic opinion that overpopulation is a major problem. He noted that, "Fifty-eight academies of science said that same thing in 1994, as did the world scientists' warning to humanity in the same year. My view has become depressingly mainline!"WEB, When Paul's Said and Done,weblink" title="web.archive.org/web/20041115081108weblink">weblink Grist Magazine, 24 Sep 2015, Ehrlich, Paul,weblink 15 November 2004, 13 August 2004, Some things I predicted have not come to pass., Ehrlich also stated that 600 million people were very hungry, billions were under-nourished, and that his predictions about disease and climate change were essentially correct. Retrospectively, Ehrlich believes that The Population Bomb was "way too optimistic".In a 2008 discussion hosted by the website Salon, Paul Ehrlich has become more critical of the United States specifically, claiming that it should control its population and consumption as an example to the rest of the world. He still thinks that governments should discourage people from having more than two children, suggesting, for example, a higher tax rate for larger families.WEB, Salon.com,weblink Do we need population control?, Katharine Mieszkowski, 17 Sep 2008, In 2011, as the world's population passed the seven billion mark Ehrlich has argued that the next two billion people on Earth would cause more damage than the previous two billion because we are now increasingly having to resort to using more marginal and environmentally damaging resources.NEWS, Hall, Eleanor, Population analyst warns of catastrophe,weblink 31 October 2011, The World Today, 31 October 2011, As of 2013, Ehrlich continues to perform policy research concerning population and resource issues, with an emphasis upon endangered species, cultural evolution, environmental ethics, and the preservation of genetic resources. Along with Dr. Gretchen Daily, he has performed work in countryside biogeography; that is, the study of making human-disturbed areas hospitable to biodiversity. His research group at Stanford University examines extensively natural populations of the Bay checkerspot butterfly (Euphydryas editha bayensis).WEB,weblink Longterm studies of the Bay checkerspot butterfly and feasibility of reintroduction, yes,weblink" title="web.archive.org/web/20060902173022weblink">weblink 2006-09-02, Ehrlich endorses his general thesis that the human population is too large, posing a direct threat to human survival and the environment of the planet.WEB, Haberman, Clyde,weblink The Unrealized Horrors of Population Explosion, The New York Times, 2015-05-31, 2015-05-31,

{{Anchor|Critics}}Reception

File:Wheat yields in Least Developed Countries.svg|thumb|Wheat yields have grown rapidly in Least Developed CountriesLeast Developed CountriesCritics have disputed Ehrlich's main thesis about overpopulation and its effects on the environment and human society, and his solutions, as well as some of his specific predictions made since the late 1960s. One criticism concerns Ehrlich's allegedly alarmist and sensational statements and inaccurate "predictions". Ronald Bailey of Reason magazine has termed him an "irrepressible doomster ... who, as far as I can tell, has never been right in any of his forecasts of imminent catastrophe." On the first Earth Day in 1970, he warned that "[i]n ten years all important animal life in the sea will be extinct. Large areas of coastline will have to be evacuated because of the stench of dead fish."WEB, Cracked Crystal Ball: Environmental Catastrophe Edition,weblink reason.com – Free minds and free markets, Reason Foundation, 4 March 2013, Ronald Bailey, 30 December 2010, NEWS, Eight Botched Environmental Forecasts,weblink December 30, 2010, Maxim Lott, FOX News, 2015-10-31, "Again, not totally accurate, but I never claimed to predict the future with full accuracy", In a 1971 speech, he predicted that: "By the year 2000 the United Kingdom will be simply a small group of impoverished islands, inhabited by some 70 million hungry people." "If I were a gambler," Professor Ehrlich concluded before boarding an airplane, " I would take even money that England will not exist in the year 2000." When this scenario did not occur, he responded that "When you predict the future, you get things wrong. How wrong is another question. I would have lost if I had had taken the bet. However, if you look closely at England, what can I tell you? They're having all kinds of problems, just like everybody else." Ehrlich wrote in The Population Bomb that, "India couldn't possibly feed two hundred million more people by 1980."Carl Haub of the Population Reference Bureau has replied that it was precisely the alarmist rhetoric that prevented the catastrophes of which Ehrlich warned. According to Haub, "It makes no sense that Ehrlich is now criticized as being alarmist because his dire warnings did not, in the main, come true. But it was because of such warnings from Ehrlich and others that countries took action to avoid potential disaster."WEB, Haub, Carl, In Defense of Paul Ehrlich,weblink 5 November 2008, 10 February 2011, Behind the Numbers: The PRB blog on population, health, and the environment, During the 1960s and 70s when Ehrlich made his most alarming warnings, there was a widespread belief among experts that population growth presented an extremely serious threat to the future of human civilization, although differences existed regarding the severity of the situation, and how to decrease it.NEWS, Leonhardt, David, Lessons From a Famous Bet,weblink 24 October 2013, New York Times, September 30, 2013, File:Felsoetold Wheat field, Hungary.jpg| thumb | left | 280px | A large increase in global food production since the 1960s and a slowing of population growth have, within the current context of continued depletion of non-renewable resources, averted the scale of food shortage, faminefamineDan Gardner argues that Ehrlich has been insufficiently forthright in acknowledging errors he made, while being intellectually dishonest or evasive in taking credit for things he claims he got "right". For example, he rarely acknowledges the mistakes he made in predicting material shortages, massive death tolls from starvation (as many as one billion in the publication Age of Affluence) or regarding the disastrous effects on specific countries. Meanwhile, he is happy to claim credit for "predicting" the increase of AIDS or global warming. However, in the case of disease, Ehrlich had predicted the increase of a disease based on overcrowding, or the weakened immune systems of starving people, so it is "a stretch to see this as forecasting the emergence of AIDS in the 1980s." Similarly, global warming was one of the scenarios that Ehrlich described, so claiming credit for it, while disavowing responsibility for failed scenarios is a double standard. Gardner believes that Ehrlich is displaying classical signs of cognitive dissonance, and that his failure to acknowledge obvious errors of his own judgement render his current thinking suspect.Barry Commoner has criticized Ehrlich's 1970 statement that "When you reach a point where you realize further efforts will be futile, you may as well look after yourself and your friends and enjoy what little time you have left. That point for me is 1972."JOURNAL, Bulletin of the Atomic Scientists, Barry Commoner, May 1972, A Bulletin Dialogue: on "The Closing Circle" â€” Response,weblink 17–56, Gardner has criticized Ehrlich for endorsing the strategies proposed by William and Paul Paddock in their book (Famine 1975! America's Decision: Who Will Survive?|Famine 1975!). They had proposed a system of "triage" that would end food aid to "hopeless" countries such as India and Egypt. In Population Bomb, Ehrlich suggests that "there is no rational choice except to adopt some form of the Paddocks' strategy as far as food distribution is concerned." Had this strategy been implemented for countries such as India and Egypt, which were reliant on food aid at that time, they would almost certainly have suffered famines. Instead, both Egypt and India have greatly increased their food production and now feed much larger populations without reliance on food aid.

Left-wing critics

Another group of critics, generally of the political left, argues that Ehrlich emphasizes overpopulation too much as a problem in itself instead of distribution of resources. Barry Commoner argued that Ehrlich emphasized overpopulation too much as the source of environmental problems, and that his proposed solutions were politically unacceptable because of the coercion that they implied, and because they would cost poor people disproportionately. He argued that technological, and above all social development would result in a natural decrease of both population growth and environmental damage.JOURNAL, Bulletin of the Atomic Scientists, Barry Commoner, May 1972, A Bulletin Dialogue: on "The Closing Circle" â€” Response,weblink 17–56, Population control (as distinct from voluntary, self-initiated control of fertility), no matter how disguised, involves some measure of political repression, and would burden the poor nations with the social cost of a situation â€” overpopulation â€” which is the current outcome of their previous exploitation, as colonies, by the wealthy nations., Ehrlich denies any type of racism, and has argued that if his policy ideas were implemented properly they would not be repressive.BOOK, The Race Bomb, 1978, Ballantine Books, Paul Ehrlich, Shirley Feldman, In a 2018 interview with The Guardian, Ehrlich advocated for an "unprecedented redistribution of wealth" in order to mitigate the problem of overconsumption of resources by the wealthy, but said "the rich who now run the global system â€” that hold the annual 'world destroyer' meetings in Davos â€” are unlikely to let it happen."NEWS, Carrington, Damian, March 22, 2018, Paul Ehrlich: 'Collapse of civilisation is a near certainty within decades',weblink The Guardian, April 4, 2018,

Simon–Ehrlich wager

Julian Simon, a cornucopian economist, argued that overpopulation is not a problem as such and that humanity will adapt to changing conditions. Simon argued that eventually human creativity will improve living standards, and that most resources were replaceable.JOURNAL, Resources, Population, Environment: An Oversupply of False Bad News, Science, 208, June 27, 1980, 1431–1437, 4451, 10.1126/science.7384784, 7384784, Simon, JL, 1684670, Simon stated that over hundreds of years, the prices of virtually all commodities have decreased significantly and persistently.BOOK, The End of Doom, Ronald Bailey, 2015, St. Martin's Press, 978-1-250-05767-9, 38, 59, ...nearly all resources in the past were much more expensive than they are today, Ehrlich termed Simon the proponent of a "space-age cargo cult" of economists convinced that human creativity and ingenuity would create substitutes for scarce resources and reasserted the idea that population growth was outstripping the earth's supplies of food, fresh water and minerals. This exchange resulted in the Simon–Ehrlich wager, a bet about the trend of prices for resources during a ten-year period that was made with Simon in 1980.NEWS, Tierney, John,weblink Betting on the Planet, The New York Times, December 2, 1990, September 26, 2012, Ehrlich was allowed to choose ten commodities that he predicted would become scarce and thus increase in price. Ehrlich chose mostly metals, and lost the bet, as their average price decreased by about 30% in the next 10 years. Simon and Ehrlich could not agree about the terms of a second bet.

Ehrlich's response to critics

Ehrlich has argued that humanity has simply deferred the disaster by the use of more intensive agricultural techniques, such as those introduced during the Green Revolution. Ehrlich claims that increasing populations and affluence are increasingly stressing the global environment, due to such factors as loss of biodiversity, overfishing, global warming, urbanization, chemical pollution and competition for raw materials.BOOK, Paul Ehrlich, Anne Ehrlich, One with Nineveh:politics, consumption, and the human future, Island Press, 2004, He maintains that due to growing global incomes, reducing consumption and human population is critical to protecting the environment and maintaining living standards, and that current rates of growth are still too great for a sustainable future.NEWS, Paul R. Ehrlich: Saving Earth,weblink 4 March 2013, Los Angeles Times, 12 February 2011, Patt Morrison, Consumption is equally important. I'd think the biggest problem is figuring out what to do on consumption. We don't have any consumption condoms., WEB, Still Ticking,weblink The Scientist, LabX Media Group, 4 March 2013, Cristina Luiggi, 1 December 2010, JOURNAL, Ehrlich, Paul R., Ehrlich, Anne H., Proceedings of the Royal Society, March 7, 2013, 280, B, 1754, 10.1098/rspb.2012.2845, 23303549,weblink Can a collapse of global civilization be avoided?, January 27, 2013, 20122845, 3574335,   Also see: Comment by Prof. Michael Kelly, disagreeing with the paper by Ehrlich and Ehrlich; and response by the authors.NEWS, Green revolution could still blow up in our face,weblink 4 March 2013, The Age, 3 February 2008, Colin Fraser, Fairfax Media,

Other activities

Ehrlich was one of the initiators of the group Zero Population Growth (renamed Population Connection) in 1968, along with Richard Bowers and Charles Lee Remington. In 1971, Ehrlich was elected to the Common Cause National Governing Board. He and his wife Anne were part of the board of advisers of the Federation for American Immigration Reform until 2003. He is currently a patron of Population Matters, (formerly known as the Optimum Population Trust).WEB, Population Matters Patron,weblink www.populationmatters.org, yes,weblink" title="web.archive.org/web/20140625195121weblink">weblink 2014-06-25, Consistent with his concern about the impact of pollution and in response to a doctoral dissertation by his student Edward Goth III, Ehrlich wrote in 1977 that, "Fluorides have been shown to concentrate in food chains, and evidence suggesting a potential for significant ecological effects is accumulating."Zelko F. Optimizing nature: Invoking the "natural" in the struggle over water fluoridation. History of Science. 2018; 1–22.Ehrlich has spoken at conferences in Israel on the issue of desertification. He has argued that "True Zionists should have small families".WEB,weblink 'True Zionists should have small families' suggests Paul Ehrlich, 40 years after writing 'The Population Bomb',

Personal life

Ehrlich has been married to Anne H. Ehrlich (née Howland) since December 1954; they have one daughter, Lisa Marie.WEB,weblink Whitney R. Harris World Ecology Center: Dr. Paul Ehrlich, icte.umsl.edu, June 21, 2010, Ehrlich has said he has had a vasectomy.{{Sfn |Dowbiggen |2008 |page=168}}

Awards and honors

Works

Books

{{Div col}}
  • How to Know the Butterflies (1960)
  • Process of Evolution (1963)
  • Butterflies and Plants: A Study in Coevolution (1964)
  • The Population Bomb (1968, revised 1971, updated 1978, re-issued 1988, 1998, 2008 and 2018)
  • Population, Resources, Environments: Issues in Human Ecology (1970)
  • How to Be a Survivor (1971)
  • Man and the Ecosphere: Readings from Scientific American (1971)
  • Population, Resources, Environments: Issues in Human Ecology Second Edition (1972)
  • Human Ecology: Problems and Solutions (1973)
  • Introductory Biology (1973)
  • The End of Affluence (1975)
  • Biology and Society (1976)
  • Ecoscience: Population, Resources, Environment (1978)
  • The Race Bomb (1978)
  • Extinction (1981)
  • The Golden Door: International Migration, Mexico, and the United States (1981)
  • (The Cold and the Dark|The Cold and the Dark: The World after Nuclear War) (1984, with Carl Sagan, Donald Kennedy, and Walter Orr Roberts)
  • The Machinery of Nature: The Living World Around Us and How it Works (1986)
  • Earth (1987, co-authored with Anne Ehrlich)
  • Science of Ecology (1987, with Joan Roughgarden)
  • The Cassandra Conference: Resources and the Human Predicament (1988)
  • The Birder's Handbook: A field Guide to the Natural History of North American Birds (1988, with David S. Dobkin and Darryl Wheye)
  • New World, New Mind: Moving Towards Conscious Evolution (1988, co-authored with Robert E. Ornstein)WEB,weblink New World New Mind â€” Pdf Edition, Ishkbooks.com, 2012-05-24, yes,weblink" title="web.archive.org/web/20120205004808weblink">weblink 2012-02-05,
  • The Population Explosion (1990, with Anne Ehrlich)
  • Healing the Planet: Strategies for Resolving the Environmental Crisis (1991, co-authored with Anne Ehrlich)
  • Birds in Jeopardy: The Imperiled and Extinct Birds of the United States and Canada, Including Hawaii and Puerto Rico (1992, with David S. Dobkin and Darryl Wheye)
  • The Stork and the Plow : The Equity Answer to the Human Dilemma (1995, with Anne Ehrlich and Gretchen C. Daily)
  • A World of Wounds: Ecologists and the Human Dilemma (1997)
  • Betrayal of Science and Reason: How Anti-Environment Rhetoric Threatens Our Future (1998, with Anne Ehrlich)
  • (Wild Solutions | Wild Solutions: How Biodiversity is Money in the Bank) (2001, with Andrew Beattie)
  • Human Natures: Genes, Cultures, and the Human Prospect (2002)
  • One With Nineveh: Politics, Consumption, and the Human Future (2004, with Anne Ehrlich)
  • On the Wings of Checkerspots: A Model System for Population Biology (2004, edited volume, co-edited with Ilkka Hanski)
  • The Dominant Animal: Human Evolution and the Environment (2008, with Anne Ehrlich)
  • Humanity on a Tightrope: Thoughts on Empathy, Family, and Big Changes for a Viable Future (2010, with Robert E. Ornstein)
  • Conservation Biology for All (2010, edited volume, co-edited with Navjot S. Sodhi)
  • Hope on Earth: A Conversation (2014, co-authored with Michael Charles Tobias) {{ISBN|978-0-226-11368-5}}
  • Killing the Koala and Poisoning the Prairie: Australia, America and the Environment (2015, co-authored with Corey J. A. Bradshaw)
  • The Annihilation of Nature: Human Extinction of Birds and Mammals (2015, with Anne Ehrlich and Gerardo Ceballos)
{{Div col end}}

Papers

  • JOURNAL, Ehrlich, P. R., 2010, The MAHB, the Culture Gap, and Some Really Inconvenient Truths, PLOS Biology, 8, 4, e1000330, 10.1371/journal.pbio.1000330, 20386722, 2850377,
  • JOURNAL, Ceballos, Gerardo, Ehrlich, Paul R., Barnosky, Anthony D., García, Andrés, Pringle, Robert M., Palmer, Todd M., 2015, Accelerated modern human–induced species losses: Entering the sixth mass extinction, Science Advances, 1, 5, e1400253, 10.1126/sciadv.1400253,weblink 26601195, 4640606,
  • JOURNAL, Ceballos, Gerardo, Ehrlich, Paul R., Dirzo, Rodolfo, 23 May 2017, Biological annihilation via the ongoing sixth mass extinction signaled by vertebrate population losses and declines,weblink Proceedings of the National Academy of Sciences of the United States of America, PNAS, 114, 30, E6089–E6096, 10.1073/pnas.1704949114, 28696295, 5544311,

See also

Notes

References

{{Reflist | 28em}}

Cited books

  • BOOK, Ian Robert, Dowbiggin, The Sterilization Movement and Global Fertility in the Twentieth Century, Oxford University Press, 2008, 9780195188585, {{SfnRef, Dowbiggin, 2008, }}

Further reading

  • Robertson, Thomas. (2012) The Malthusian Moment: Global Population Growth and the Birth of American Environmentalism, Rutgers University Press: New Brunswick, New Jersey. {{ISBN|0813552729}}.

External links

{{Heineken Prizes}}{{FRS 2012}}{{Authority control}}

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