" . . . the guardians of the future." - Alice C. Tyler
Tyler Prize Laureates 1974–2015 Slideshow
Web Sites of Laureates:
  Jane Lubchenco, Madhav Gadgil
Jane Lubchenco     Jane Lubchenco
In recognition for effective and valiant public leadership to sustain our global ocean commons and for your inspired work in education, mentorship, science communication, and science policy. Your research and policy efforts have advanced understanding of threats to ocean biodiversity and the feasibility and benefits of recovering depleted fisheries and creating marine protected areas to enhance our global life support systems. You set an example for all scientists to take on the responsibility of communicating science to inform public understanding and policy that sustains earth's natural resources.
Madhav Gadgil     Madhav Gadgil
In recognition for innovative and courageous public leadership to sustain and enhance the natural resources of India. You have brought awareness of the strong links between people and their natural environments. You particularly have advanced the assessment of environmental impacts of state and national policies by utilizing community-engaged processes to inventory and manage biodiversity. Through high-impact publications you have mobilized communities and have deeply influenced public opinion and national policy in India.
Web Sites of Laureates:
  Simon A. Levin
Simon A. Levin     Simon A. Levin
In recognition for his signal contributions to understanding complex systems in many fields, particularly for establishing and modelling fundamental concepts of conservation, and documenting the importance of adaptive systems for improved management of fisheries and forests.
Web Sites of Laureates:
  Diane H. Wall
Diana H. Wall     Diana H. Wall
In recognition for world-spanning research and for passionate, innovative communication across generations on the vital components of soil; integrating plant pathology, species invasions, climate controls, hydrological cycle impact and physical processes into an understanding of biological functions, diversity and ecosystem services of this foundation element of environmental and human well-being.
Web Sites of Laureates:
  John H. Seinfeld, Kirk R. Smith
John H. Seinfeld     John H. Seinfeld
In recognition of his pioneering research leading to understanding of the origin, chemistry, and evolution of aerosols in the atmosphere. The fundamental understanding of the physics and chemistry of urban and regional air pollution that has emerged from his research created a basis for actions to control the effect of air pollution upon public health. His work has also led to a deeper understanding of the effects of atmospheric aerosols on climate.
Kirk R. Smith     Kirk R. Smith
In recognition of his pioneering work at the intersection of environmental science and global public health, including establishing that indoor air pollution in the rural sectors of developing countries outweighs outdoor air pollution in cities as a global health hazard. He did so with painstaking measurements of soot and hydrocarbon concentrations in rural dwellings across China, India, Africa, and Latin America, followed up, in concert with epidemiologists he recruited to the task, by documentation of high incidences of asthma and other pollution-related illnesses among the rural populations thus exposed.
Web Sites of Laureates:
  May R. Berenbaum
May R. Berenbaum     May R. Berenbaum
In recognition of her contributions in the field of coevolution of herbivorous insects and plants, elucidating the physiological and genetic basis for understanding the interactions between herbivorous insects and plants, her application of these concepts to agricultural practices, and for sharing her insights on the role of insects in our ecosystems.
Web Sites of Laureates:
  Laurie Marker, Stuart L. Pimm
Laurie Marker     Laurie Marker
In recognition of her contributions in developing an ecosystem based approach to sustainable management of a landscape, using the knowledge and economic interests of the local population, and thereby also supporting the continuation and survival of the cheetah.
Stuart L. Pimm     Stuart L. Pimm
In recognition of his contributions in delineating the structures of ecological food webs, which allows understanding of the determinants of the expected lifetimes of plant and animal populations and the determination of populations most vulnerable to risks of extinction and those with the capacity to recover most rapidly from disturbances.
Web Sites of Laureates:
  Richard B. Alley, V. “Ram” Ramanathan
Richard B. Alley     Richard B. Alley
In recognition of his contributions to understanding the relationships between the cryosphere and global warming, the vulnerability of the Antarctic and Greenland ice sheets, and for alerting us to the potential for contemporary abrupt climate change and its possible impacts and costs to society today.
V. “Ram” Ramanathan     V. “Ram” Ramanathan
In recognition of his contributions to the understanding of the dangers to planet Earth, especially from perturbations to its radiation field by trace greenhouse gasses, and illumination of how significant regional impacts to humans can be caused by the aerosols in atmospheric brown clouds.
Web Sites of Laureates:
  James N. Galloway, Harold A. Mooney
James N. Galloway     James N. Galloway
In recognition of your quantitative characterization and detailing of biogeochemical cycles, the multiple impacts of human inputs to them, and the consequences for the global environment, particularly as illustrated by your development of the “nitrogen cascade.”
Harold A. Mooney     Harold A. Mooney
In recognition of contributions to community ecology by integrating population and physiological studies at the global scale, the application of convergent evolution to community structure, and as a central figure in launching many major international ecology programs.
Web Sites of Laureates:
  Gatze Lettinga
Gatze Lettinga     Gatze Lettinga
In recognition of your research and development of an environmentally sound novel process for the treatment of polluted wastewater and its implementation worldwide, especially in developing countries.
Web Sites of Laureates:
  David W. Schindler, Igor A. Shiklomanov
David W. Schindler     David W. Schindler
In recognition of your discoveries, made through interdisciplinary experimental research and ecological hypothesis testing, that contribute to understanding how anthropogenic stressors affect the health of freshwater ecosystems.
Igor A. Shiklomanov     Igor A. Shiklomanov*
In recognition of your contributions to advancing understanding of the global water budget through quantitative assessment of the effects of water withdrawals on the water cycle and making projections for future generations.
Web Sites of Laureates:
  Charles David Keeling, Lonnie G. Thompson
Charles David Keeling     Charles David Keeling*
In recognition of your rigorous time series measurements of atmospheric carbon dioxide (CO2) and their interpretation.  These carefully made observations conducted over four and a half decades, and continued today, have revealed world wide increases in CO2 with striking spatial and temporal patterns of variability that show relationships between the carbon cycle and climate, and reveal unanticipated links between these components and the earth system.  From your remarkable lifetime of scientific investigations, we know that humans are altering the global physical environment.
Lonnie G. Thompson     Lonnie G. Thompson
In recognition of your pioneering work in the collection and analysis of valuable climatic  information contained in tropical glacier ice cores from all over the world. The high altitude collection of these evidences of past climatic conditions is a heroic feat of mountaineering that requires courage, daring and physical endurance comparable to the legendary explorers of yore.
Web Sites of Laureates:
  The Barefoot College, and Red Latinoamericana de Botanica
The Barefoot College     The Barefoot College
Is recognized for its pioneering efforts in developing solutions to improve the environment and quality of life for the rural poor of India.  The contributions of the Barefoot  College include training centers, dissemination of sustainable and eco-friendly technologies for water treatment and energy production and innovative approaches to resource management and public health.
Red Latinoamericana de Botanica     Red Latinoamericana de Botanica
Is recognized for its contribution to the advancement of botanical sciences in Latin  America by the unprecedented program of courses, student exchanges, and collaborative research projects and especially by promoting regional pride, self-sufficiency and strong and healthier international relations among the countries of Latin America.
Web Sites of Laureates:
  Hans Herren, Yoel Margalith, and Sir Richard Doll
Hans Herren     Hans Herren
Leading one of the world’s largest and most successful biological control programs, Dr. Herren and his research team identified and introduced a parasitic wasp, a natural enemy of the mealybug which was attacking the cassava plant, one of Africa’s most important food crops, and threatening over 200 million people with famine across tropical and subtropical Africa.  The wasp brought the mealybug under full control within 10 years, preventing widespread famine and the death of an estimated 20 million people.
Yoel Margalith     Yoel Margalith*
Known worldwide as Israel’s “Mr. Mosquito”, his efforts in introducing integrated biological control to eradicate mosquitoes and black flies have saved millions of lives worldwide and protected many regions of the world from the effects of chemical pollution.  His discovery in 1976 of the new microbial subspecies known as Bacillus thuringiensis israelensis (Bti), which is lethal to most species of mosquitoes and black flies, has had an enormous effect on human health and on environmental quality.
Sir Richard Doll     Sir Richard Doll*
A medical pioneer, he has done more than any other epidemiologist to transform the world’s general understanding of the avoidability of cancer and many other diseases linked to environmental exposures and human behavior.  His pioneering work on the association between a range of environmental agents and cancer led to establishing the link between lung cancer and cigarette smoking.
Web Sites of Laureates:
  Wallace S. Broecker and Tungsheng Liu
Wallace S. Broecker     Wallace S. Broecker
A pioneer in the development of geochemical tracers to describe basic biological, chemical and physical processes that govern the behavior of carbon dioxide in the oceans and the interactions of oceanic carbon dioxide with the atmosphere. He proposed the concept of a global oceanic "conveyor belt" and identified the importance of changes in North Atlantic deep water formation as a leading candidate for the trigger of abrupt climate changes over the last few million years.
Tungsheng Liu     Tungsheng Liu*
A pioneer in developing ways to measure paleoclimatic change over the last 2.5 million years through studies of loess, a windblown dust, that forms thick deposits over much of central China. The Chinese loess record contains an unparalleled terrestrial record of global environmental change.
Web Sites of Laureates:
  Jared M. Diamond and Thomas E. Lovejoy
Jared M. Diamond     Jared M. Diamond
A pioneer in the field of conservation biology, his work has led to the recognition of a sub-field of community ecology based on "assembly rules", competition and community dynamics. His novel theories relating species extinction rates to habitat size helped give birth to the discipline of conservation biology and served as a justification for large nature reserves.
Thomas E. Lovejoy     Thomas E. Lovejoy
A pioneer in the field of conservation biology, he elucidated the concept of the Minimum Critical Size of Ecosystems and was thus central to calling to world attention the critical problem of dwindling tropical forests. He is credited with coining the term biological diversity, now shortened to biodiversity. Perhaps his best-known idea is the "debt-for-nature swap," which allows developing nations to convert foreign debt to nature reserves and conservation programs.
Web Sites of Laureates:
  John P. Holdren
John P. Holdren     John P. Holdren
His research and leadership have helped to shape the global environmental debate and to mobilize the international community of scientists and policymakers into taking action on a wide range of energy, environmental and security issues. He has made important contributions to clarifying the challenges at the intersection of energy, environment, and development; to charting a path toward cleaner and safer energy-supply technologies; and to improving the protection of nuclear materials against theft and diversion for use in weapons.
Web Sites of Laureates:
  T. T. Chang and Joel E. Cohen
T. T. Chang     T. T. Chang*
T.T. Chang, Ph.D., is the world authority on rice genetics and conservation. His research on the evolution and variation of rice has led to major advances in plant breeding, productivity, and disease resistance with a profound impact on agriculture productivity throughout much of Asia, Africa, and South America.
Joel E. Cohen     Joel E. Cohen
Joel E. Cohen, Ph.D., has made important contributions to the understanding of food webs in natural and human-made ecosystems and developed realistic, unbiased models of population growth and the carrying capacity of earth. His work laid the foundation for the development of food-web ecology over the last 20 years, and has significantly advanced the scientific basis for population estimation.
Web Sites of Laureates:
  Anne H. Ehrlich and Paul R. Ehrlich
Ann H. Ehrlich     Anne H. Ehrlich
Her scientific contributions, individually and jointly with Paul have extended our understanding of population, biology, ecology and evolution. Anne and Paul have displayed exceptional courage in taking prominent public stands on questions critical to the future of humankind, such as the preservation of biodiversity and endangered species, the hazards of pesticide pollution, and nuclear winter.
Paul R. Ehrlich     Paul R. Ehrlich
His development of the powerful concept of co-evolution (with Peter Raven) was an important contribution to understanding the dynamics of animal populations. These ecological and evolutionary principles were later applied by the Ehrlichs to help assess the impact of human populations on the environment. His 1968 book, The Population Bomb, was the wake-up call for an entire generation.
Web Sites of Laureates:
  Jane Goodall, Birute Galdikas and George Schaller
Jane Goodall     Jane Goodall
is acknowledged as the world's authority on the behavior and ecology of chimpanzees. The profound scientific discoveries from her Gombe Stream Research Centre laid the foundation for all future primate studies. Today, over 35 years later, those studies continue to teach mankind much about our closest, non-human relative and our own culture. Through books, personal appearances and global environmental education programs for children, she brings awareness of wildlife and environmental conservation to the broadest possible audience.
Birute Galdikas     Birute Galdikas
The world's leading authority on orangutan behavior and ecology. Dr. Galdikas and her team provided the scientific community with the first detailed observations of orangutan life history, habitat, and diet. Her field research, one of the longest, continuous studies of any mammal in the works, has also provided important information on the rainforest as a whole and a better understanding of Indonesia's biodiversity.
George Schaller     George Schaller
His detailed field studies of gorillas, tigers, lions, snow leopards, and pandas resulted in writings that have inspired a generation of wildlife biologists and resulted in more effective conservation and management practices throughout the world. A number of national parks in Brazil, Pakistan, Mongolia, and China have been the result of his cooperative efforts with these countries.
Web Sites of Laureates:
  Willi Dansgaard, Hans Oeschger and Claude Lorius
Willi Dansgaard     Willi Dansgaard*
The first paleoclimatologist to demonstrate that measurements of the trace isotopes oxygen-18 and deuterium (heavy hydrogen) in accumulated glacier ice could be used as an indicator of climate change over time. For more than forty years, he has studied the evolution of the atmospheric environment from successive layers of polar ice.
Hans Oeschger     Hans Oeschger*
The pioneer of gas composition and radiocarbon measurements on polar ice, his measurement of carbon dioxide concentrations from air bubbles trapped in ice revealed for the first time the important role that the world's oceans play in influencing global climate. Abrupt climate swings associated with the changes in atmospheric greenhouse gasses are known as "Dansgaard-Oeschger" events.
Claude Lorius     Claude Lorius
The successful collaboration between Russian, American and French scientists in the recovery and analysis of the longest ice core drilled to date (the Vostok Core) resulted from his promotion of international cooperation. His team reconstructed carbon dioxide and methane variations over the last 150,000 years, which show a strong relationship between global climate and the chemical composition of the atmosphere.
Web Sites of Laureates:
  Clair C. Patterson
Clair C. Patterson     Clair C. Patterson*
His systematic and far-reaching research on the pathways by which lead finds its way into the environment and into living organisms alerted policy makers to the dangers to human health worldwide from lead exposure.
Web Sites of Laureates:
  Arturo Gomez-Pompa and Peter H. Raven
Arturo Gomez-Pompa     Arturo Gomez-Pompa
Outstanding tropical forest ecologist and ethnobotanist, he was one of the first to draw attention to the destruction of tropical rainforests. He has led in the involvement of indigenous peoples in the preservation of their environment and he is Mexico's most prominent voice for conservation.
Peter H. Raven     Peter H. Raven
Co-developer of the theory of co-evolution, he has combined brilliant botanical research with energetic efforts to address the issues of tropical habitat destruction and species extinction. He is one of the most effective international exponents of the conservation ethic.
Web Sites of Laureates:
  F. Herbert Bormann and Gene E. Likens
F. Herbert Bormann     F. Herbert Bormann*
Co-developer with Gene E. Likens of the Hubbard Brook Ecosystem Study, they conceived the idea of utilizing a small watershed for controlled experiments on a whole forest ecosystem. Their research on forest clearcutting, the loss of soil fertility, and the chemical degradation of stream water changed American law and forestry practice.
Gene E. Likens     Gene E. Likens
Co-developer with Bormann of the Hubbard Brook Ecosystem Study, they created the premier model for ecosystems studies in the world. Their discovery of acid rain resulted in recognition of acid rain as a major environmental problem in North America and contributed to the development of the Clean Air Act of 1990.
Web Sites of Laureates:
  Perry L. McCarty and Robert M. White
Perry L. McCarty     Perry L. McCarty
One of the world's leading environmental engineers, he created a scientific approach for the biological treatment of water for purification, wastewater reclamation and groundwater treatment that is used worldwide. He pioneered scientific principles for anaerobic digestion in wastewater treatment and contaminant control of aquifers.
Robert M. White     Robert M. White*
A world leader in designing cooperative networks and building institutions, he planned the global atmospheric research program and initiated international efforts to understand global climate change and the effects of greenhouse gases. The first administrator of NOAA, he helped create and implement legislation on marine fisheries, marine mammal conservation, and coastal zone management.
Web Sites of Laureates:
  C. Everett Koop and M. S. Swaminathan
C. Everett Koop     C. Everett Koop*
Surgeon General of the United States from 1981 - 1989, he served as the conscience of the nation as Americans changed their attitudes on the dangerous effects of smoking. Through his campaign, a healthier public environment has been created and 20 million Americans have given up the smoking habit.
M.S. Swaminathan     M.S. Swaminathan
One of the world's preeminent agricultural scientists, his plant breeding programs have led to dramatically increased crop yields in India. His efforts to improve the quality and quantity of crops have earned him the reputation of the scientific leader of the "Green Revolution" in Asia.
Web Sites of Laureates:
  Thomas Eisner and Jerrold Meinwald
Thomas Eisner     Thomas Eisner*
Partner with Meinwald in founding chemical ecology, he provides biological explorations to unravel many intricate strategies that insects use for survival. To safeguard the chemical treasury of nature, he has acted forcefully for the preservation of species.
Jerrold Meinwald     Jerrold Meinwald
Partner with Eisner in founding chemical ecology, he provides molecular characterizations of the chemical signals insects, plants and animals use to communicate. His chemical insights have heightened awareness of the importance of "secondary metabolites" in nature.
Web Sites of Laureates:
  Paul J. Crutzen and Edward D. Goldberg
Paul Crutzen
(Nobel Prize web)
    Paul J. Crutzen
One of the world's authorities on atmospheric chemistry, he made landmark discoveries on stratospheric and tropospheric ozone, nuclear winter, and humanity's capacity to upset the global atmosphere.
Edward D. Goldberg     Edward D. Goldberg*
One of the premier marine geochemists and chemical oceanographers investigating global ocean pollution problems, he greatly advanced understanding of radio nuclides, wind-borne DDT, petrochemicals, and heavy metals. He pioneered costal pollution monitoring using living bivalve organisms.
Web Sites of Laureates:
  Bert R. J. Bolin
Bert R. J. Bolin     Bert R. J. Bolin*
A pioneer in global climate changes, he helped focus international attention on the potential dangers to the world's climate posed by the greenhouse gases and acid rain. His lifelong research has contributed to knowledge about the carbon cycle, and the phosphorus, nitrogen, and sulfur cycles.
Web Sites of Laureates:
  Richard E. Schultes and Gilbert F. White
Richard E. Schultes     Richard E. Schultes*
The preeminent ethnobotanist in the world, he promoted tropical forest conservation at the level of the developing country by demonstrating the value of tropical plant species to industry and medicine.
Gilbert F. White     Gilbert F. White*
An outstanding geographer and world leader on problems of the environment, he promoted the scientific basis for, and the consequent application of, innovative alternative water resource and river basin management policies and practices.
Web Sites of Laureates:
  Werner Stumm and Richard Vollenweider
Werner Stumm     Werner Stumm*
The preeminent water chemist in the world, his fundamental research on chemical equilibria in water systems and its relationship to the distribution and circulationof chemical substances has made possible the protection of lakes and rivers throughout the world.
Richard Vollenweider     Richard Vollenweider*
A theoretical limnologist whose research led to the development of predictive models of eutrophication of fresh waters, his theories resulted in major advances in water pollution control throughout the world.
Web Sites of Laureates:
  Bruce N. Ames and the Organization for Tropical Studies
Bruce N. Ames     Bruce N. Ames
Developer of the Ames Test for the rapid screening of environmental carcinogens, his test has proven invaluable in protecting against unnecessary exposure to cancer-causing agents.
Organization for
Tropical Studies
    Organization for Tropical Studies
A consortium of U.S. and Costa Rican universities, OTS provides the world's finest facility for on-site education and field research on tropical forest ecology.
Web Sites of Laureates:
  Roger R. Revelle and Edward O. Wilson
Roger R. Revelle     Roger R. Revelle*
A scholar of great breadth in oceanography, world population studies, and global climactic perturbations, he was a pioneer in the understanding of global resources.
Edward O. Wilson     Edward O. Wilson
Co-developer of the theory of island biogeography, he was instrumental in its application to conservation. His research into population dynamics and chemical ecology has led to new insights in modern biology.
Web Sites of Laureates:
  Harold S. Johnston, Mario J. Molina and F. Sherwood Rowland
Harold S. Johnson     Harold S. Johnston*
One of the world's authorities in atmospheric chemistry, he was one of the first to call attention to the possibility that stratospheric contamination by nitrogen oxides might threaten the Earth's ozone layer.
Mario Molina
(Nobel Prize Web)
    Mario J. Molina
Co-developer of the Rowland-Molina hypothesis on ozone depletion by chlorofluorocarbons, he has been studying the disruption and perturbation of natural cycles in the stratosphere.
F. Sherwood Rowland
(Nobel Prize Web)
    F. Sherwood Rowland*
Co-developer of the Rowland-Molina hypothesis, his policy initiatives led to regulations that controlled the use of chlorofluorocarbons as aerosol propellants in the western world.
Web Sites of Laureates:
  Carroll L. Wilson and the Southern California Edison Company
Carroll L. Wilson     Carroll L. Wilson*
Contributor to fundamental work in the modeling of world energy supplies, he enlisted governmental and industrial leaders from around the world in studies of global energy prospects through the year 2000.
Southern California Edison Company     Southern California Edison Company
The first major utility in the United States to establish as policy a shift to alternate and renewable energy sources, they continue to provide strong corporate leadership.
Web Sites of Laureates:
  Russell E. Train
Russell E. Train     Russell E. Train*
A leader in the United States political-environmental arena, and first chairman of the Council on Environmental Quality, he was instrumental in formulating environmental policy and in developing environmental quality standards in the United States.
Web Sites of Laureates:
  Eugene P. Odum
Eugene P. Odum     Eugene P. Odum*
One of the first educators to establish an institute for the training of ecologists, his research and writings have influenced countless students throughout the world.
Web Sites of Laureates:
  Abel Wolman, Charles S. Elton, Rene Dubos
Abel Wolman     Abel Wolman*
A pioneer in water resource management and waste water treatment, and a professor at Johns Hopkins University from 1921 until 1989, he trained generations of young people in the field of water conservation.
Charles Elton     Charles S. Elton*
Often considered as the father of the science of animal ecology, his fundamental research has led to a greater understanding of ecological competition, and the organization and disruption of animal communities.
Rene Dubos     Rene Dubos*
Scientist and internationally influential author, his books and articles provided society with a new perspective on the interaction between the environment and humanity.
Web Sites of Laureates:
  Ruth Patrick
Ruth Patrick     Ruth Patrick*
A lifetime researcher on the ecology of rivers, she has been instrumental in providing a link between science and industry for the protection of the nation's rivers.
Web Sites of Laureates:
  Arie Jan Haagen-Smit, G. Evelyn Hutchinson and Maurice Strong
Arie Jan Haagen-Smit     Arie Jan Haagen-Smit*
Discoverer of the chemical nature of smog and advocate for change, the air pollution research he started as Caltech has expanded to air quality researchworldwide.
G. Evelyn Hutchinson     G. Evelyn Hutchinson*
One of this century's preeminent ecologists, his work in theoretical ecology provided the foundation of modern ecological practice.
Maurice Strong     Maurice Strong*
Founding director of the United Nations Environment Programme, he has provided skilled diplomatic leadership in the international political-environmental arena.
      * deceased


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