Chapter One: Towards a Sustainable Future

1.1 The Global Environmental PictureI. For global trends are particularly concerning: 1) population growth and economic

development 2) a decline of vital life-support ecosystems, 3) global atmospheric changes, and 4) a loss of biodiversity.

Population Growth and Economic DevelopmentI. The population is expected to grow the most in developing countries, which is also

where the most people are in poverty.A. The Millennium Development Goals aimed to reduce extreme poverty and its

effects on human wellbeing. II. Global economic production continues to rise and per capita income in developing

countries has improved. However, income in most developing countries is falling further behind the developed countries because of the existing great inequalities in wealth.A. Stabilizing population growth in the developing countries is essential for closing

the economic gap between those nations and the industrialized countries.The Decline of Ecosystems

I. Natural and managed ecosystems support human life and economies with a range of goods and services. These vitals resources are not being managed well.A. Around the world human societies are depleting groundwater supplies, degrading

agricultural soils, over fishing oceans, and cutting forests faster than they can regrow.

Millennium Ecosystem Assessment I. The Millennium Ecosystem Assessment has taken more than 4 years to gather

available data on the state of ecosystems across the globe. The project focuses especially on the linkages between ecosystem goods and services and human wellbeing, working at global, regional, and local scales.A. The most prominent finding of the MA scientists was the widespread abuse and

overexploitation of ecosystem resources. B. The overall intent of the project is to build a knowledge base for sound policy

decisions and management interventions; it remains for policymakers to managers to act on that knowledge.

Global Atmospheric ChangesI. Concern about the depletion of the stratosphere has led to international action—the

Montreal Protocol of 1987—aimed at curbing pollution from the release of chlorofluorocarbon refrigerants into the atmosphere.

II. Carbon dioxide is a natural component of the lower atmosphere, along with nitrogen and oxygen. It is required by plants for photosynthesis and is important to the Earth-atmosphere energy system.

A. Carbon dioxide gas absorbs infrared energy radiated from Earth’s surface, thus slowing the loss of this energy to space. The absorption of infrared energy by carbon dioxide warms the lower atmosphere in a phenomenon known as the greenhouse effect.

B. Increases in the volume of the gas affects temperatures.The Kyoto Protocol

I. A commitment to reduce the emission of greenhouse gases to below their 1990 levels by 2012.

II. Levels of greenhouse gases will continue to rise indefinetly.A. At issue for many countries are the conflicting concerns between the short term

economic impacts of reducing the use of fossil fuels and the long term consequences of climate change for the planet.

B. The future climate changes are likely to disrupt the ecosystem goods and services essential to human well-being, and since the extreme poor depend especially on natural ecosystems, they will suffer disproportionately.

Loss of BiodiversityI. The MA defines biodiversity as “the variability among living organisms and the

ecological complexes of which they are part.”A. The growing human population is accelerating the conversion of forests,

grasslands, and wetlands to agricultural and urban development. The inevitable result is the loss of most of the wild plants and animals that occupy those natural habitats.

B. Pollution also degrades habitats, destroying the species they support. Hundreds of species are also exploited for their commercial value.

Risks of Losing BiodiversityI. Biodiversity is the mainstay of agricultural crops and of many medicines. The loss of

biodiversity can only curtail development in these areas.A. Biodiversity is also a critical factor in maintaining the stability of natural systems

and enabling them to recover after disturbances such as fires or volcanic eruptions.

B. Most of the essential goods and services provided by natural systems are derived directly from various living organisms, and we threaten our own wellbeing when diminish the biodiversity of those natural systems.

C. There are also aesthetic and moral arguments for maintaining biodiversity.

I.2 Three Strategic Themes: Sustainability, Stewardship, and ScienceI. Strategic themes deal with how we should conceptualize our task of forging a

sustainable future.A. These themes are sustainability—the practical goal that our interactions with the

natural world should be working toward; stewardship—the ethical and moral

framework that informs our public and private actions; and science—the basis for our understanding of the world and how human systems interact with it.

II. Integrative themes deal with the current status of interactions between human systems and the natural world.A. These themes are ecosystems capital—the natural and managed ecosystems that

provide essential goods and services to human enterprises; policy and politics—the human decisions that determine what happens to the natural world, and political processes that lead to those decisions; and globalization—the accelerating interconnectedness of human economies, ideas, and cultures.

SustainabilitySustainable Systems

I. A system or process is sustainable if it can be continued indefinitely, without depleting any of the material or energy resources required to keep it running.A. The term was first applied to the idea of sustainable yields in human endeavors

such as forestry and fisheries.B. Biological species normally grow and reproduce at rates faster than that required

to just keep their population stable. This built-in capacity allows every species to increase or replace a population following a natural disaster. Thus, it is possible to harvest a certain percentage of trees or fish every year without depleting the forest or reducing the fish population below a certain base number.

C. As long as the number harvested stays within the capacity of the population to grow and replace itself, the practice can be continued indefinitely. The harvest then represents a sustainable yield.

D. It becomes unsustainable only when trees are cut or fish are caught at a rate that exceeds the capacity of their present population to reproduce and grow.

II. The notion of sustainability can also be extended to include ecosystems.A. Sustainable ecosystems are entire natural systems that persist and thrive over time

by recycling nutrients and maintaining a diversity of species in balance and by using the Sun as a source of sustainable energy.

Sustainable SocietiesI. A sustainable society is one that is in balance with the natural world, continuing

generation after generation, neither depleting its resource base by exceeding sustainable yields nor producing pollutants in excess of nature’s capacity to absorb them.

Sustainable DevelopmentI. Sustainable development is a term that was first brought into common use by the

World Commission on Environment and Development, a group appointed by the United Nations. They defined the term as development or progress that “meets the needs of the present without compromising the ability of future generations to meet their own needs.”

A. Both developed and developing countries have embraced the idea of sustainable development, although the industrialized countries are usually more concerned about environmental sustainability, while the developing countries are more concerned about economic development.

B. The basic idea is to maintain and improve the well-being of both humans and ecosystems.

II. The concept of sustainable development is now so well-entrenched in international circles that it has become almost an article of faith. It appears to incorporate some ideas that are sorely needed, such as equity—whereby the needs of the present are actually met and where future generations are seen as equally deserving as those living now.A. Sustainable development means different things to different people, however.

Economists are concerned mainly with growth, efficiency, and the optimum use of resources. Sociologists mainly focus on human needs and on concepts like equity, empowerment, social cohesion, and cultural identity. Ecologists show their greatest concern for preserving the integrity of natural systems, for living within the carrying capacity of the environment, and for dealing effectively with pollution.

III. There are many dimensions to sustainable development—environmental, social, economic, political—and no societies today have achieved anything resembling it. nevertheless, it is important to uphold sustainable development as an ideal.

An Essential TransitionI. The transition to a truly sustainable civilization requires achieving a stable human

population that recognizes the finite limits of Earth’s systems to produce resources and absorb wastes and that acts accordingly.A. To achieve sustainability will require a special level of dedication and

commitment to care for the natural world and to act with justice and equity toward one another. Changes that are required for sustainability:

B. A demographic transition from a continually increasing human population to one that is stable.

C. A resource transition to an economy that relies on nature’s income and protects ecosystem capital from depletion.

D. A technology transition from pollution-intensive economic production to environmentally benign processes.

E. A political/sociological transition to societies that embrace a stewardly and just approach to people’s needs and in which large-scale poverty is eliminated.

F. A community transition from the present car-dominated urban sprawl of developed countries to the “smart growth” concepts of smaller, functional settlements and more livable cities.

Stewardship

I. Stewardship is the ethical and moral framework that should inform out public and private actions. Stewards are those who care for something that is not theirs and that they will one day pass on to the next generation.A. Stewardship is an ethic that guides actions taken to benefit the natural world and

other people.B. Stewardily care is compatible with the goal of sustainability, but it is different

from it, too, because stewardship deals more directly with how sustainability is to be achieved.

Who Are the Stewards?I. Oftentimes, stewardship is a matter of everyday people caring enough for each other

and for the natural world that they do the things that are compatible with that care.Justice and Equity

I. The stewardship ethic is concerned not only with the care of the natural world, but also with establishing just relationships among humans.A. This concern for justice has been applied to the US in what is called the

environmental justice movement. The major problem addressed by the movement is environmental racism—the placement of waste sites and other hazardous industries in towns and neighborhoods in which most of the residents are nonwhite.

Justice for the Developing WorldI. Justice is especially crucial for the developing world, where unjust relationships have

often left people without land, with inadequate food, and in poor health. Extreme poverty is the condition of at least 1.1 billion people, whose poverty is often brought on by injustices within societies where wealthy elites maintain political power and, through corruption and nepotism, steal money and create corporations that receive preferential treatment.

II. Some the poverty in the developing world can be attributed to unjust economic practices of the wealthy industrialized countries.A. By imposing restrictive tariffs and import quotas, and subsidizing their

agricultural commodities, industrialized countries have maintained inequities that discriminate against the developing countries. Such barriers deprive people in developing countries of jobs and money that would go far to improve their living conditions.

Science and the Scientific MethodI. Science is simply a way of gaining knowledge called the scientific method. The term

science refers to all information gained through that method.II. Data consist of information gathered from observations and measurements drawn

from the natural world or from human interactions with it and from testing ideas through experimentation.

A. Data must be acquired through the senses, directly through the use of instruments, and data and observations must be recorded with the highest possible degree of accuracy.

B. An important aspect of science, and a trait of scientists, is to be skeptical of any new report until it is confirmed. Such confirmation usually means that other investigators must repeat and check out the data of the first investigator and validate their accuracy.

C. As observations are confirmed by more and more investigators, they gain the status of factual data.

III. Theories are the major objective of scientific reasoning—the explanations of how things work in the natural world. Theories are models that are intended to represent how a system works.A. When scientists construct theories, they must be objective and rational.

Objectivity is achieved when all data and observations are considered, not just those which conform to the current model. Rationality refers to the need to make clear, logical connections between data and theory. Often, those connections will take the form of mathematical relationships.

IV. Shaping principles are those conscious and unconscious values and assumptions scientists bring to their work. They can profoundly influence the course of scientific investigations, both in gathering data and forming theories.A. One of the most important shaping principles is the worldview a scientist brings

to his or her field of study. A person’s worldview is a set of assumptions and values that the person believes to be true about how the world works and about their place in it.

B. Worldviews involve both crucial and trivial issues and often determine the direction of a person’s work and their choices.

C. One shaping principle is the assumption of the uniformity of nature—that the natural world obeys certain fundamental laws and does so without exception. Many scientists believe that quantifiability is a requirement for data. Prior commitment to a particular theory or paradigm can also be a powerful shaping principle.

The Scientific CommunityI. Our confidence in scientific knowledge should be proportional to the evidence

supporting it.II. It is important to understand that science and its outcomes take place in the context of

a scientific community and a larger society. There is no single authoritative source that makes judgments on the validity of scientific theories. Instead, it is a collective body of scientists working in a given field, who, because of their competence and experience, establish what is authentic science and what is not.

Controversies in Science

I. New Information—we are continually confronted by new observations—the hole in ozone layer, or the dieback of certain forests. It takes some time before all the hypotheses regarding the cause of what we have observed can be adequately tested. During this time, there may be honest disagreement as to which hypothesis is most likely. Such controversies are gradually settled by further observations and testing, but the process lead into the second reason for continuing controversy.

II. Complex Phenomena—certain phenomena, such as the hole in the ozone layer or the loss of forests, do not lend themselves to simple tests or experiments. Therefore, it is difficult and time consuming to prove the causative role of one factor or to rule out the involvement of another. Gradually, different lines of evidence come to support one hypothesis and exclude another, enabling the issue to be resolved. When is there enough evidence to say unequivocally that one hypothesis is right and another is wrong? At some point, the scientists working in the appropriate field will reach a consensus in making the judgment.

III. Bias—the third reason for controversy is that there are many vested interests which wish to maintain and promote disagreement, because they stand to profit by doing so. For example, tobacco interests argued for years that the connection between smoking and illness had not been proved and that more studies were necessary. By harping on the absence of absolute proof and downplaying the overwhelming body of evidence supporting the connection between smoking and illness, the tobacco lobby succeeded in keeping the issue controversial and thereby delayed regulatory restrictions on smoking.

IV. Subjective Values—the fourth reason for controversy is that subjective value judgments may be involved. This is particularly true in environmental science because the discipline deals with the human response to environmental issues.

V. Some controversy is the inevitable outcome of the scientific process itself, but much of it is attributable to less noble causes. Unfortunately, the media and the public may be unaware of the true nature of the information and will often give equal credibility to opposing views on an issue.

Evaluating ScienceI. When judging the validity of different viewpoints, we must ask:

A. What are the observations underlying the conclusion. Can they be satisfactorily confirmed?

B. Do the explanations and theories follow logically from the data?C. Does the explanation account for all of the observations?D. Are there reasons a particular explanation is favored? Who profits from having

that explanation adopted broadly?E. Is the conclusion supported by the community of scientists with the greatest

competence to judge the work?

I.3 Three Integrative Themes: Ecosystem Capital, Policy/Politics, and Globalization

I. Integrative themes describe some of the dimensions of what we are dealing with as humans draw their sustenance from the natural world and inevitably affect it.

Ecosystem CapitalGood and Services

I. The stock of ecosystem capital in a nation and its income-generating capacity represents a major form of wealth of the nation.

ExploitationI. Ecosystem capital is exploited to support essential human activities. Just because

ecosystem capital is renewable, however, does not necessarily mean that it will be exploited sustainably.A. In addition, there are many threats to ecosystem capital that come from human

activities.II. Unsustainable exploitation and other damaging impacts represent a reduction of the

goods and services provided by these ecosystems. Far too often, the people most affected by this loss are the poor.

Protecting Ecosystem CapitalI. Many of the factors that drive changes in ecosystem capital are related to exploitation.

Policy and PoliticsI. The purpose of environmental public policy is to promote the common good. Two

goals stand out: the improvement of human welfare and the protection of the natural world.A. Environmental public policy addresses two sets of environmental issues: 1) the

prevention or reduction of air, water, and land pollution and 2) the use of natural resources like forests, fisheries, oil, land, and so forth.

Local LevelI. Some policies are developed at local levels to solve local problems. None of this

happens in a political vacuum, however, and there is always some sort of political battle.

Broader LevelsI. It becomes the responsibility of national governments to address broader problems.

As with local policies, however, there are political battles at the national level surrounding almost every environmental issue. The result is often a compromise that leaves everyone unhappy.

Current PoliticsI. Politics always accompanies policy.

GlobalizationI. Globalization—the accelerating interconnectedness of human activities, ideas, and

cultures—is the third integrative theme.A. The intensity, speed, and extend of connectedness are rapidly increasing, to the

point where their consequences are profoundly changing many human enterprises.

These changes are most evident in the globalization of economies, cultural patterns, political arrangements, environmental resources, and pollution.

B. For many in the world, globalization has brought undeniable improvements in well-being and health, as economic exchanges have improved public-health practices, and agricultural research has improved crop yields.

C. For some, however, globalization has brought the dilution and even destruction of cultural and religious ideals and norms and has done little to improve economic well-being.

Economic ChangesI. The major element of globalization may be the economic reorganization of the world.

The transformation had been facilitated by the globalization of communication, whereby people are instantly linked.A. Other components of reorganization are the relative ease of transportation and

financial transactions; the dominance of transnational corporations with unprecedented wealth and power; trade arrangements between major economic players; and the power of the World Trade Organization.

B. Economic changes bring cultural, environmental, and technological changes in their wake.

Environmental ChangesI. Globalization has contributed to some notoriously harmful outcomes, such as the

spread of worldwide diseases; the global dispersion of exotic species, the trade in hazardous wastes; the spread of persistent organic pollutants; the radioactive fallout from nuclear accidents; the exploitation of oceanic fisheries; the destruction of the ozone layer; and global climate change.

ProtestsI. The foregoing and other perceived negative impacts of globalization have led to a

significant protest movement.A. Many who criticize globalization cite its ideological commitment to unfettered

economic growth and its accompanying resource consumption. They are concerned that globalization is often promoted as an unquestionable good yet does not seem to be at all capable of promoting other goods, such as a safe environment, financial stability, sustainable development, or social justice.

I.4 The Environment in the 21st CenturyWSSD: Johannesburg, 2002

I. The WSSD meeting attempted to address the undeniable fact that most of the agreements made at the U.N. Conference on Environment and Development were implemented weakly. Preparation for the WSSD summit focused on issues vital to the process of sustainable development, such as generating clean water and sanitation, providing energy services, reversing the deterioration of agricultural lands, protecting

marine fisheries, addressing toxic chemicals and human health, and protecting biodiversity.

II. Unfortunately, the WSSD did very little of what was hoped for. The resulting Plan of Implementation bore little resemblance to that of the UNCED, with only weak statements of support for crucial issues.

A New CommitmentI. Many global trends are on a collision course with the fundamental systems that

maintain our planet as a tolerable place to live. The current degradation of ecosystems, atmospheric changes, losses of species, and depletion of water resources inevitably lead to a point where resources are no longer adequate to support the human population as where, consequently, civil order will break down.

Good NewsI. Food production has improved the nutrition of millions in the developing world, life

expectancy continues to rise, and the percentage of individuals who are undernourished continues to decline. Population growth rates continue to fall in many of the developing countries.A. A rising tide of environmental awareness in the industrialized countries has led to

the establishment of policies, laws, and treaties that have improved the protection of natural resources and significantly reduced the pollution load.