2007
Blue Planet Prize
Professor Joseph L. Sax (USA)Dr. Amory B. Lovins (USA)Professor Emeritus,
University of California, Berkeley

Chairman and Chief Scientist,
Rocky Mountain Institute

SYMPOSION:
On this blue planet, The planet we live inHarmony of life so grandeur Plays the
melody so deep in wisdom.
When have we human beings become soforgetful To listen to the wisdom ofnature And negligent in caring for otherlives. We a tiny member on this planet
Needing care and affection, Became
ignorant to join the chain of infinity To
sustain to live together.
We hope this film Can play its part In
reawakening people's awareness Of ourplanet, the blue planet That tells us theimportance Of all the lives And to lend
an ear To the tune of wisdom of nature.

Selected from the Slide Show Presented at the Openingof the Awards Ceremony
31

His Imperial Highness Prince Akishino congratulates
the laureates

Their Imperial Highnesses Prince andPrincess Akishino at the Awards Ceremony

Hiromichi Seya, Chairmanof the Foundation delivers
the opening address

Dr. Hiroyuki Yoshikawa,
Chairman of the Selection
Committee explains therationale for the determination of the year's
winners

The prizewinners receive their trophies from Chairman Seya

Mr. J. Thomas Schieffer,
Ambassador of the UnitedStates of America to Japan,
congratulates the laureates

The prizewinners
me e t wi t h t h epress prior to theawards ceremony
32

Professor Joseph L. Sax

Dr. Amory B. Lovins

Blue Planet Prize Commemorative Lectures

Profile

Professor Joseph L. Sax
Professor Emeritus, University of California, Berkeley
Education and Academic and Professional Activities
1936
Born in Illinois
1957
A.B., Harvard University
1959
J.D. University of Chicago
1962-66
Professor of Law, University of Colorado
1966-86
Philip A. Hart Distinguished University Professor, University of Michigan
1976
Environmental Quality Award, U.S. E.P.A
1977
Elizabeth Haub Award, Free Univ. Brussels
1984
Wm. O. Douglas Legal Achievement Award, The Sierra Club1985
Environmental Law Institute Award
1986-present James H. House & Hiram H. Hurd Professor (emeritus),
School of Law (Boalt Hall), University of California (Berkeley)
1994-96
Counselor to the Secretary of the Interior,
Deputy Assistant Secretary of the Interior
2004
Distinguished Water Attorney Award(As of June, 2007)

Professor Sax was born in Illinois, U.S.A. in 1936. After graduating from Harvard University,
he earned the degree of Juris Doctor from the University of Chicago in 1959. He taught law at
the University of Colorado from 1962 to 1966 and then he moved to the University ofMichigan, where he became the Philip A. Hart Distinguished University Professor. He joined
the Boalt faculty of the University of California at Berkeley in 1986, and at present is theHouse & Hurd Professor of Environmental Regulation, Emeritus.
In the mid-1960s, series of lawsuits were raised against pesticide spraying encouraged
by Rachel Carson's "Silent Spring" although all lawsuits were wholly unsuccessful. Professor
Sax observed that the laws themselves rarely contained environmental protections, and was
drawn to the area and further engaged himself in the field of environmental law. In 1969, helearned of a lawsuit opposing the construction of an apartment building along the bank of the
Potomac River in Washington, DC The basis for the suit was the public trust doctrine, and here
he found the legal basis to advance environmental conservation causes.
Michigan Environment Protection Act which was adopted in 1970 and known as the"Sax Act" was drafted by Professor Sax and was groundbreaking in that it authorizedenvironmental citizen suits and ensured standing in environmental litigation by stating "anyperson, partnership, corporation, association, organization or other legal entity may maintain33

an action in the circuit court for the protection of the air, water and other natural resources andthe public trust therein from pollution, impairment or destruction." A primary feature of thelaw was its recognition that every person is legally entitled to the benefits of legal protection
against pollution and other environmentally destructive activities, and that the courts were tobe empowered to grant relief against such activities.
The "Sax Act" later became the model for similar statutes in more than a dozen otherstates.
In 1970, Professor Sax published "The Public Trust Doctrine in Natural Resource Law:
Effective Judicial Intervention." This landmark article argued that the U.S. courts has theauthority and responsibility to prevent legislatures and administrative agencies from damaging,selling, or giving away environmental features, such as coastlines and wetlands, that were
entrusted to the ownership of the people as a whole. More than any other work in the historyof environmental law, this article has been cited countless times as the leading discussion of
the public trust principle, and it has initiated an entire literature on the limits of governments
in America to damage environmental resources held in trust for all people.
Professor Sax served as Deputy Assistant Secretary of the U.S. Interior Department andas legal counsel to the Secretary, Bruce Babbitt between 1994 and 1996, and internationally,
he has been active and contributed in helping governments, and multilateral organizations(such as the U.N. agencies) improve the role of environmental law in contending with
continuing ecological degradation, pollution, and diminishing water and natural resources
stocks. He authored books on environmental law issues and is the author of about 150 law
review articles. He has also published many magazine articles, newspaper essays, and reports
emphasizing the need for improving environmental protection. He did more than write. He led
the creation of the Environmental Law Institute, and the launch of the Environmental Law
Reporter.
In seeking to explain the appropriate limits of private property, and the legitimate
interests of the public, Professor Sax has in recent years sought to draw provocative analogies
between the need to protect the natural world's treasures, and the well-accepted understandingof the need to protect cultural treasures, such as great works of art and historical andarchaeological resources. He has therefore written about "cultural property" as anotherexample of the need for a public trust concept, and to illustrate the importance of appreciating
the limits of what can be claimed in the name of private property.
Professor Sax has been and still is the leading environmental law scholar in the UnitedStates and the world, and he has repeatedly created new legal innovations to expand the realmsof environmental and natural resources protection laws, and has directly or indirectly influenced
the ideas of scholars in many other countries. He has also been actively involved in publicaffairs as they relate to environmental protection and conservation issues, and contributed to
the world.

34

EssayAn Environmental Agenda for Our Time
Professor Joseph L. Sax
Where do we go from here? If we are to make real advances in protecting the natural heritagethat time has passed down to us, one central element of our agenda must necessarily be a reconception of the meaning and content of landownership. A transformative legal change isrequired, and so long as courts and lawmakers, and the scholars who influence them, cling to
the proposition, “what is the land but the profits thereof ”, we will not effect that transformation.
The need to re-conceive land law does not require a repudiation of the importance ofusing land to meet the needs and interests of human communities. So the question is what
would an environmentally appropriate land system look like?
I suggest the following five approaches as an outline that can help move us toward a
new way of thinking about land, landowners, and the public.
First, we have a theoretical legal precedent very close to hand that can be very helpful:the legal status of water. Nearly 100 years ago, the U.S. Supreme Court famously observed,“there [cannot] be said to arise any ownership of [a navigable] river. …Ownership of a private
stream wholly upon the lands of an individual is conceivable; but that the running water in agreat navigable stream is capable of private ownership is inconceivable.” 1 The reason, ofcourse, is that great rivers and the sea have always been understood to provide vital services
that the community as a whole needed, and to which, therefore, the community as a wholemust have an entitlement. The notion of the sea as common property traces at least back to
Roman law, 2 and the idea that water as a vital resource cannot be privately owned but remains
the property of the people, subject only to use-rights or usufructs. Water, since it is a vital
resource, as the Supreme Court of Colorado observed as long ago as 1882, is governed by thelaw of “imperative necessity.” 3
As we now see land—in the context of climate change, as vital for biodiversity
protection, as a continuum with other land and with its adjacent waters, rather than a collectionof independent fenced squares—it looks much more like the waters that have earned universal
recognition as incorporating an elemental public entitlement to which private uses mustnecessarily accommodate.
Second is the question what is need to assure that we do not continue to diminishbiodiversity, to generate destructive rising sea levels, or to destroy a sustainable economy. But
for a long time we believed—wrongly as it turned out—in the inexhaustibility of the globe’s
resources, and in a promise of technology to replace what was destroyed, a promise that it
could not adequately fulfill. We also knew less once than we do now about resources such as
wetlands (which we called swamps), and about the role of land as habitat, a word that was noteven a part of our vocabulary until recent decades. What is new is our understanding that theexisting system of laws about land and about ownership is not producing and protecting

35

adequately what we need and are entitled to expect of it.
Third, the changes that are needed can and should be made in ways that facilitate thecontinued production of goods and services that are required to serve a prosperous humancommunity. A first principle would be that the public holds an entitlement to the natural
services provided by land, and that a landowner has no proprietary right to diminish or destroy
those services, but that proprietary uses for human benefit are appropriate and lawful to theextent that they are compatible with minimization of loss of biodiversity, and with promotionof sustainable use of natural resources. This principle must underlie our system of land laws.
Fourth, we now know a good deal about how to shape land use to produce the goods andservices we need, and simultaneously to protect our natural patrimony. There are many wellknown practices that can and should be implemented in support of a land law suitable to aneffective environmental agenda, and there is a substantial literature on the subject. 4 Amongthe most familiar practices are avoidance of development in wetlands, along shorelines, andin flood plains; identification and protection of wildlife corridors; identification of valuable
undeveloped areas, and institution of land use practices that maintain such places to the
maximum extent practicable, including clustering of development away from sensitive areas;
forestry and agricultural management practices calculated to maximize sustainable use;
restoration of mined areas to re-initiate natural services from those areas; and protection andrestoration of instream flows and riparian areas. We know how to restore upstream eroded
meadowlands to hold more spring waters, as an alternative to building new dams andreservoirs.5 There are also well-established techniques for restoration of severely-alteredecosystems that can restore endemic species and, at least to a significant extent, naturalprocesses—even in the most ecologically troubled places. 6
In addition to restrictive practices, we should not hesitate to offer positive incentives tolandowners to utilize environmentally appropriate methods—such as tax benefits and subsidies
to encourage new practices that maintain or restore degraded terrain. Such incentives can beparticularly valuable during transitional periods, and help to avoid unfairness or excessive
burdens on owners who find themselves caught in transitional regulatory situations, using
such devices as a more flexible and positive approach than using property doctrines to shapeland use. 7 A mixture of public incentives along with regulation that incentivizes private actors
to be innovative and to behave adaptively is the most productive approach.
Having said this, I want to emphasize the continued need for public funding to supportand sustain restoration of already-degraded areas, the usefulness of private philanthropic
purchases of critical tracts, and the central importance of public lands that embrace pristineor near-pristine areas, which, though not sufficient, have a vital role to play. Both extreme
positions that only purchase of private rights, or only regulatory action without any payments
or subsidies to landowners and water users are mistaken. We need both approaches.
Implementation of these approaches would go far toward encouraging disinvestment
and non-investment by high-risk investors in sensitive areas, and instead encourage investment
in lands and waters that can be utilized non-destructively.
Fifth, and finally, changing the rules is essential, but that change can only be fully
effective as landowners move on to see themselves as custodians for the community, and for36the future, as well as for their own benefit. This may seem a form of wishful thinking, butthere is a parallel worth pondering, that of art collectors holding famous works who, thoughusing the works for their own benefit and pleasure, also see themselves as participants in thesafeguarding of a common heritage and routinely loan their property to public institutions, andmake them available to students and scholars, so that they serve as private property imbued
with a public interest.8
Moreover, there is no way to avoid a new way of thinking if we really intend to makebiodiversity protection a serious goal of land use. If we look at land as habitat, we must thenask, who owns biodiversity? It’s not a question our legal system is structured to ask. I suppose
the answer is everybody and nobody. One way of thinking about it is as an unprotectedcommon superimposed on privately owned land. We can all agree it’s a good thing and it
deserves as much protection as we can manage to provide it. We would then have to agree thatits protection depends on the maintenance of adequate, viable habitat. And that such placesconsists very largely of privately owned land.
So we find ourselves in unfamiliar territory. There is something very important to us allcollectively. But we don’t own it. It inheres in, and depends on, something called habitat(which is also un-owned as such). Habitat inheres in land, which is owned, and which we havealways believed owners could generally use as they wished, which largely involved destroying
its value for that service. So it seems that the public has a legitimate stake in the way in which
owners use land, even though the owner isn’t doing anything that has traditionally been thoughtof as outside his private domain and therefore as unpermitted. These are thoughts honorable
landowners will sometime have to ponder.
I close with two brief statements that I made in 2005 at the IUCN Academy meeting in
Sydney in 2005:
First, “It is a chastening fact that the phrase ‘rights of the public’ is as rare as anendangered species in American environmental jurisprudence, as rare as the phrase ‘rights ofthe private property owner’ is commonplace.”
And second, “That no one has a property right to destroy the benefits of a natural
system” may seem obvious, yet its opposite has been the unarticulated watchword of thedevelopmental economy’s property system for some 300 years. It’s time for a change.

References
1. United States v. chandler-Dunbar co. 229 U.S. 53,62,69 (1913); affirmed in United States v. Willow RiverPower Co., 324 U.S. 499, ___ (1945).
2. [cite Inst. Of Justinian].
3. Coffin v. Left Hand Ditch Co., 6 Colo. 443, ___ (1882).
4. E.g., Richard L. Knight & Courtney White, Conservation for a New Generation: Redefining Natural
Resource Management (2009); Joshua H. Goldstein et al., Business Strategies for Conservation on Private
Lands: Koa Forestry as a Case Study, 103 Proced. U.S. Nat’l. Acad. Sci. 10, 140 (2006); Stacy M. James,
Bridging the Gap between Landowners and Conservationists, 16 CONSERV. BIOL. 269 (2002); Mari N.
Jensen, Can Cows and Conservation Mix? 51 BIOSCIENCE 85 (2001).
5. Dana M. Nicholds, “Meadow Restoration May Be Inexpensive Method for Water Storage”, Stockton, CA
Record, Mar. 14, 2011. This is a project of the National Fish and Wildlife Foundation, a quasi-private37

organization created by Congress.
6. In the U.S., a good example is California’s Bay-Delta ecosystem. See, e.g., Ellen Hanak, et al, Managing
California’s Water: From Conflict to Resolution (Public Policy Institute of California, 2011), ch. 5,“Reconciling Ecosystems: Reversing Declines in Native Species”. See generally, Michael Rosenzweig,
Win-Win Ecology, “How The Earth’s Species Can Survive in the Midst of Human Enterprise” (Oxford
Univ. Press, 2003).
7. Joseph L. Sax,“Land Use Regulation: Time to Think About Fairness”, 50 Nat.Res.J. 455 (No. 2, Spring,2010).
8. I have tried to draw this parallel in a book entitled Playing Darts With A Rembrandt (University ofMichigan Press, 1999).

38

Lecture

The Unfinished Agenda ofEnvironmental Law
Professor Joseph L. Sax
The field of environmental law is young. Not even four decades have passed since the basic
laws for protection of air and water, and for environmental assessment, began to be enacted in
the industrialized nations. Obviously much has been accomplished in that relatively shorttime. Today I would like to talk about what remains to be done in terms of the law's role insafeguarding our environmental heritage. Before turning to that matter, however, and because
many of you are not specialists in this field, I would like to make a few preliminary observations about the role of the legal system more generally.
The primary tasks of the law are basically three-fold:(1) to establish rules to govern daily social intercourse in commercial areas such as
contract, and to protect property and bodily security against unwanted intrusions;(2) to replace anarchy and self-help with the rule of law; and(3) to articulate and safeguard basic human rights in order to protect the individual
against over-reaching by the state. In this latter category we find essential individual
rights like free speech, freedom of religion, and basic protections for those accusedof wrongdoing. More recently, there has been growing recognition of what are
sometimes called positive human rights, such as the right to an education, to decent
housing, to a living wage and healthful working conditions, and to basic medical
care.
Where in this pantheon does one find the role of environmental law? In its formative
stages, it developed primarily to bring certain traditional protections such as nuisance andtrespass law to bear on hazards generated by modern industrial society. For example, though
law had always protected the physical integrity of the individual against unwanted invasions,contamination of rivers and the ambient air presented new harms in new forms. Pollution wasoften caused by many different dischargers, and its damages frequently did not appear until
many years later.
Traditional legal notions, such as causation and proof of harm, all had to be revised totake account of the complex nature of contemporary environmental contamination. Amongthese revisions, one of the most important was the recognition that a preventive strategy wasnecessary, since the law usually provided only money damages after harm had been done. This
meant a need to set emission standards, to deal with scientific uncertainty about risk, and toengage with the perplexing issues raised by what is now called the "precautionary principle."
The adaptations made to traditional legal concepts such as nuisance, to take account of these39new elements, were among the first important achievements of environmental law.
But environmental law has also had to pioneer in another much less conventional area.
The most familiar example is biodiversity protection. This problem does not arise in the formof an invasion of any individual's established legal right, and it does not involve any conduct
traditionally viewed as wrongful. For example, farmers cultivating their fields to produce
agricultural products may be destroying valuable habitat, and contributing to the decline in
species diversity. Moreover, unlike health-endangering pollution, many people (even today)
do not see diminishing biodiversity as a serious problem for the planet, and sometimes
especially where obscure species with strange-sounding names are involved-do not perceive it
as a problem at all.
When conduct involves neither familiar rights or wrongs, and presents no imminently
obvious peril, controlling it presents a distinctive challenge for the legal system: How does one
bring such a problem within the ambit of rights that people can understand, and that the system
can accommodate.
As we began to grapple with issues like loss of biodiversity, we sought out a precedent
based on something that has virtually disappeared from the modern world: the law of thecommons1, where everyone in a community had a stake, for example, in the maintenance of aforest's productivity for the collection of firewood, or for hunting, but no one bore individual
responsibility for protecting the forests' continued capacity to be productive. In such settings,
both the rights and the benefits were collective; they belonged to people not as individuals but
as members of a community. Of course, commons were a feature of traditional societies,
where people thought more of themselves as members of a community than as autonomous
individuals. Moreover, in such relatively stable societies people knew what was required ofthem; they did what had been done traditionally, what their forbears did going back countless
generations.
The maintenance or restoration of habitat is obviously a commons problem, but withsome unique features in the contemporary world. For one thing, the land that comprises habitat
is no longer held in common; it has been divided up into separately owned tracts. And thenotion of common responsibility for maintaining productivity (traditional uses and limitations
known to all, and incumbent on all) has virtually disappeared from our consciousness. In its
place has arisen individually-owned property and the entitlements that go with it. And, ofcourse, modern property law was devised not to assure the maintenance of biodiversity, but topromote productivity in the sense of maximizing the economic benefit that could be achievedby an individual proprietor.
The case of species loss is illustrative. Species require habitat. But habitat fits noconventional legal concept. Landownership bears no relation to the essential habitat of any
species. Wildlife species are usually unowned and un-possessed, and endemic plant species
are often competitors with more immediately profitable crops. Most species have no economic
value to those who own the lands that are their habitat, though they may be of extraordinary
value for research that ultimately generates important scientific and technological advances.
Moreover, indigenous species are often seen as obstacles to conventional land uses: wolves orbears as predators on domestic livestock; wetlands denizens as a problem for land filling and40

development; prairie or forest as an impediment to modern agriculture.
This history has generated a particularly difficult jurisprudential challenge for modern
environmental law. It has been obvious for some time that we were losing biological diversity
at a rapid and increasing rate, and on a number of fronts. As rivers were dammed up for hydropower and for irrigation and municipal water supply, spawning grounds and habitat for
indigenous species of fish were extirpated. The demand for wood products saw the decimationof forests, first in the temperate zones, and then in tropical areas. Mineral exploitation had
similar impacts, and population growth and urban development, like agriculture before it, hasconverted vast areas of habitat, both uplands and wetlands, and generated a steady decline inbiological diversity. All this, of course, is very well known. What is perhaps less well understoodis how poorly prepared our legal system was to address these issues: we faced a commons
problem in a non-commons world.
In an article some years ago2, I noted that our laws relating to natural resources such as
land and water have evolved over the past several centuries almost exclusively to promotewhat I called the transformative economy. That economy, I said, "builds on the image ofproperty as a discrete entity that can be made one's own by working it and transforming it intoa human artifact. A piece of iron becomes an anvil, a tree becomes lumber, and a forest
becomes a farm. The law treats undeveloped land as essentially inert. The land is there, it may
have things on it, or in it, but it is in a passive state, waiting to be put to use. Insofar as it is'doing' something for example harboring wild animals or indigenous plants-the conventionallaw considers such functions expendable. Indeed, getting rid of the natural, or at least
domesticating it, was a primary task of modern society. For most of the modern era, land andwater have been employed essentially to end the existence of natural systems. Land has beenfenced to exclude or extirpate wildlife so it could support domesticated grazing animals,
agriculture, mining, and human settlements.
By contrast, any notion of the importance of protecting biodiversity builds on what may
be thought of as the economy of nature, as contrasted with the transformational or developmental
economy. In the economy of nature, land is not a passive entity waiting to be transformed byan owner. Nor is the world composed of distinct tracts of land. Rather the ecological perspective
views land as a system defined by function, not by man-made boundaries. Land is already atwork performing important functions in its unaltered state. Forests regulate global climate,marshes sustain marine fisheries, and prairie grass holds the soil in place. In the economy ofnature, wetlands would be governed by laws based on their ecological role, not on lines drawn
on a map. And their protection would be the responsibility of all those whose activities
wherever carried on adversely affected them. If today we are seriously to protect what remainsof our biological heritage, to restore degraded rivers and landscapes, and to redeploy forests toplay a positive role in controlling human-induced climate change, we need a legal system thatis as well-attuned to achieving those goals as the conventional legal system we have inherited
was attuned through transformation of nature to achieving the goals of the industrial revolution.
This history helps explain why the law has had so difficult a time in dealing with themost profound of modern environmental problems, such as biodiversity protection and climatechange. When it works best, law creates incentives that encourage people to behave in ways

41

that promote society's goals. Our legal system structured on separately owned tracts of land
was designed, and works efficiently, to achieve the goals of the transformative society: toproduce houses and cars and wheat and steel, etc. It is quite ill-suited to meet the goals of an
economy of nature, such as biodiversity maintenance and restoration. We have collective
needs, but no collective rights. Moreover, as I shall illustrate shortly, the mentality of many ofus, including lawmakers and judges, continues to perceive of the natural world solely throughthe lens of the transformative economy.
It is, of course, possible that the interest in protecting the services provided by natural
systems could be protected by sovereign states outside the category of ordinary legal rights,
and we have done that to some extent by setting aside parks, wildlife refuges, marine reserves,
and wilderness areas. These were the primary techniques of the 19th Century conservation
movement, and they continue to be necessary elements of any strategy for biodiversity
protection, but they are demonstrably not sufficient. The vast majority of the world's land,
including much of its most important and sensitive habitat, is in private ownership or control,and is vulnerable to private economic exploitation by owners whose conception of property
rights and of ownership responsibility contains little or no notion of any common rights or of
responsibility to the commons. In light of traditional concepts of landownership (andusufructuary rights in water as well), that is hardly surprising.
It is a sobering thought that while virtually every other interest that we consider vitalhas been made the subject of enforceable legal rights, our heritage of biodiversity stands
largely outside the framework of established jurisprudential theory, and thus, except to theextent governments find it in their interest to act protectively, exposed to the ravages of humanactivity. We would not think of leaving individuals to the discretion or current policies of thegovernment to safeguard their private property, or their contractual rights, or their inheritances.
We view all these things as essentials and we have enshrined them as legal entitlements. They
can be invoked even if government officials at a given time decided to take no initiative on
their behalf. It is not that we do not, and should not, rely on public officials. It is simply that
we should not rely solely on them; and where fundamental rights are in question, we never dorely solely on them. We want and need the state to be vigilant on our behalf, but we treasure
our rights, and we know the value of being able to invoke the machinery of the law to protect
those rights.
To be sure, the notion of rights held in common among us all that are real and serious
enough to be as well protected as our individual rights, is not the way most of us are accustomed
to thinking about what is "ours." If someone asked you to list your assets, in addition to yourhouse and your bank account and your jewelry, you would not likely list the polar bear or theeagle, to say nothing of freshwater mollusks or primaeval forests, yet our biological patrimony
is among the most precious of our assets. In the United States, we do think of places like ournational parks as common possessions that belong to us and that we are entitled to haveprotected, but such publicly owned places embrace only a tiny fraction of the creatures, plants
and habitats that constitute the stock of our remaining biodiversity.
The task of protecting adequately our remaining biological patrimony demands a robust
development of the idea of common heritage, of things that belong to us as members of the42

world community, and that are entitled to protection at our behest in whatever particularownership patterns they are held. As some of you know, I have written quite a bit in recent
years about what is called "cultural property," such as great works of art, important antiquities,
and objects of historical and scientific importance3. This has puzzled many people, whowonder what all this has to do with environmental law. The answer is that I became interested
in studying cultural property because it has some of the same characteristics and presents
some of the same problems of preservation and protection as does our biological inheritance.
We tend to think of things like the Parthenon Marbles or Old Master Paintings or thetemple at Angkor Wat as part of our common cultural heritage, and to recognize that they need
to be cared for and protected, regardless of their location or their formal ownership status.
Many great works of art are in private collections, yet we expect them to be cared for, andultimately to be made accessible to the public. The great English Monument of Stonehenge
was once part of a private landed estate, but that did not make it any less worthy of preservation
to humankind, both to present and future generations. Nor does national sovereignty or asserted
national ownership, as in the tragic case of the Bamiyan Bhuddas of Afghanistan recently
mutilated by the Taliban-bestow rights of neglect or destruction, a point that has been madeagainst political iconoclasm at least since the destructive frenzies experienced at the time of
the French Revolution4. The ideas, and the protective techniques, that have been established in
the field of cultural property provide some useful precedents and analogies as we work toenlarge public understanding and to assure the safeguarding of our biological birthright.
The distinctive character of biodiversity, as I have noted in these remarks, presents a
novel challenge to our legal system, not simply in the technical task of formulating laws, buteven in understanding of the nature of the problem. A few moments ago I noted that thepresuppositions of the transformative society were so dominant in the thinking of many thatthey made it difficult even to perceive the real nature of biodiversity issues. Several recent
cases in the U.S. Supreme Court are depressingly illustrative of the problem.5
The case involved implementation of the Endangered Species Act 6, and the question
was whether the environmentally concerned citizens who had initiated the case had a sufficient
stake in the matter to be allowed to come to court. (The general principle is that I can only sue
to protect some interest of my own, as where my contract is breached, or my property is
trespassed on; and the question in this case was who had a sufficient interest in protecting an
endangered species from illegal activities that were jeopardizing its continued existence, tosue to stop that activity). In this case, the justices characterized the sole legitimate interest of
the public in the safeguarding of endangered species as "use," in the sense that people use theanimals when they come as tourists to see and photograph them, or use them for scientificstudy. The Court refused to allow the environmental plaintiffs to seek enforcement of theendangered species law because they had not proven that they personally were going to re-visit
the site where the animals lived in order to see them, and thus their personal "use" of thespecies was not being affected. This appalling misconception of what biodiversity is about,and what the stake of each of us is in that enterprise, is unfortunately demonstrative of how far
we have yet to go.
Nor is the case I just cited as exceptional as one might wish. In another more recent

43case7, a number of the Justices showed themselves unable or unwilling to see the scope of ourwater protection law in terms of ecological connections, and voted to deny protection under
the law to wetlands unless they were physically adjacent to a river, apparently on some notionthat wetlands are land, and not water, and therefore don't come within the ambit of a law
designed to protect "the chemical, physical and biological integrity of [the] Nation's waters8."
The opinion says it "rejected the notion that ...ecological considerations....provide[d] an
independent basis for including entities like wetlands or ephemeral streams within the phrase"the waters of the United States." Whether decisions such as these are read as purposeful antienvironmental sentiment, or as a more innocent incapacity to see how modern environmental
problems can be fitted into the pre-existing legal system, the conclusion is inescapable that thenotion of a common heritage that vitally needs legal protection is still woefully underdeveloped.
Obviously, we cannot and should not simply replace the structure of the existingtransformative economy, and its legal system, with a structure built solely on the restoration ofnatural systems. No sensible person wants to return to a state of nature. We need the positive
benefits of the industrial and post-industrial economy, but our inherited legal structure cannot
stand unaltered if we want to protect what we have, and to restore what we can, of our biologicalpatrimony. There are many workable adaptive mechanisms that can produce a desirable levelof protection and restoration. But we need a legal system that permits and promotes such
adaptations.
One aspect of such a system requires an understanding of property rights as being
adaptive to changing public needs and to new technological and scientific knowledge. This iswell accepted at some levels. Everyone understands that if new knowledge demonstrates
something to be hazardous to health, though it was previously a valuable property, it can nolonger be used as it was previously. Industrial waste water, once discharged without control orlimit, is a familiar example. That principle needs to be more widely appreciated. For example,
as we have discovered the adverse impacts on fish spawning grounds of traditional water
diversions for agriculture, industry and urban use, it must be recognized that there is noproperty right to destroy a fishery or other valuable aquatic habitat, even though that means areduction in traditional economic uses.
This is simply one example of the proposition that a river is a common, and must be
used to secure common rights in its productivity as an aquatic system, and isn't simply asource of private proprietary diversionary rights. The same sort of re-conception is possible inthe context of forest management, or land development for residential and commercial use, if
previously-recognized developmental rights are moderated to promote maintenance andrestoration of habitat, and the duty to do so is acknowledged as a legally cognizable public
entitlement.
While any such re-configuration of rights will necessarily require changes in the way
business is done, and will sometimes be costly, we should not require such changes to becompensated. The reason is that we need a system that encourages human adaptation andingenuity. The familiar precept that necessity is the mother of invention is a necessarycomponent of a well-functioning legal system. For example when we articulated air emission

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standards as legal requirements, it stimulated the development of new technologies and newindustrial practices. Often, it is possible to implement such transitions without serious adverse
consequences to those who must undergo change. For example, in the arid western UnitedStates, where agricultural irrigation (which uses the great bulk of all the available water,
averaging as much as 80%) must limit its diversions in order to restore instream ecosystem
values, newly developed efficiency gains in the use of water, or shifting to less water-intensive
crops, can significantly offset losses attributable to reduced diversions.
In either event, whether costly or not, property exists in a social context, and like allrights, its limits are described by the social exigencies of its time. For example, at one time
married women could not own property; what they owned went to their husbands upon
marriage, reflecting a societal view about women's status in society. When that value changed,
we enacted what are called Married Women's Property Acts, which revised the property rights
of husbands to their disadvantage. This same principle must govern contemporary societal
values about the responsibilities of owners to protect our environmental heritage.
The need to revise our conception of rights in the earth and its waters in order to reinvigorate the conception of the world as a commons, and of rights held in common, has a long
way to go before it can flower fully. So far, we have made just a modest amount of progress.
The public trust doctrine, drawn from the ancient Roman law recognizing the sea and theseashore as the common inheritance of humankind, open to all for navigation and fishery, hasbeen one of the most useful adaptations of traditional legal doctrines for bringing the notionof public rights and responsibilities into the modern era9. So far its application has been limited
to waters, but the underlying principle will, I am confident, find even broader application. Two
important contemporary cases in the United States are illustrative of the way the law needs toevolve if we are to get an adequate grip on protecting the natural values that constitute ourbiological inheritance.
In the first such case10, the City of Los Angeles was diverting water for municipal use
from streams tributary to a large lake known as Mono Lake, which is located directly east of
Yosemite National Park in California. The result of these diversions was steadily to diminish
the elevation of the lake, severely impacting its capacity to sustain its indigenous marineorganisms, and its use as bird habitat. In response to concerns expressed that the enforcementof common rights under the public trust doctrine would either deprive a major city of its
needed water supply, or simply drive it to another location where it might do even more harm,
the government authorized the appropriation of funds to install a variety of water-conservation
programs in the city, so as effectively to replace the lost supply by reducing demand. In theensuring years, the elevation of Mono Lake has risen, and its biological values have been
largely restored with no discernible adverse impact on Los Angeles. The case stands for the
proposition that the natural values in the Mono Lake ecosystem are an entitlement of the
public, and that any uses of the resources of that system, even though for a perfectly legitimate
use, must be made in a way that respects the protection and sustained productivity of thatsystem. Notably, nothing in the case suggests that absolute preservation is required, or that thesystem cannot be impacted by human use. The legal constraint is only that use must be madein a way that does not destroy the functioning ecosystem of the lake.

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A more recent Hawaii case11 is also illustrative of how common rights in the form of the
public trust can be effectively implemented. Early in the 20th Century, in order to irrigate
plantations on the dry (southern) side of the island of Oahu, tunnels were drilled through themountains, and water diverted from streams on the northern (wet) side of the island. The result
was harm to ecosystem values in those streams and to the traditional agriculture of Native
Hawaiian people who lived near those streams. In recent years, as the plantations were retired,diversions through the tunnels were sharply reduced, and water again flowed in the streams. In
a notable example of the resilience of natural systems (and, incidentally, of the positive
potential of restoration efforts), there was a resurgence of life in the streams and revived
opportunities for traditional agriculture. While those who had owned the use-rights in thewater for plantation irrigation wanted to retain those rights, presumably for planned future
residential development, an environmental case was initiated to restore ecosystem and Nativevalues under the rubric of the public trust in water as a common right, rather than a merely
private, perpetual property right. The Supreme Court of the State of Hawaii issued a mostinteresting and important decision recognizing public trust rights in Hawaii, and ordering therestoring of substantial flows to implement those rights. The case is of special interest because
it not only elucidates the familiar public trust doctrine with its roots in Roman Law, but it setsout principles of traditional Hawaiian law that lead to similar mandates for restoration. In
addition, the case is instructive because it shows that certain moments of opportunity arise (inthis case the closing of the sugar plantations on Oahu) where environmental restoration can beeffectuated without adverse impacts on existing economic activity.
These are just two specific illustrative instances of adaptive behavior mandated by thelegal system, providing examples of the practicality of bringing about needed change in favorof biodiversity protection and restoration. Broadly stated, what we need is a more robust notionof common rights and responsibilities, legally recognized and enforceable, that we all hold as
stewards of the earth, no less important than the effort we expend to protect our stock ofcommon scientific knowledge, or our literary and artistic heritage. We need a more fully
developed conception of land as habitat (and not solely as an object to be transformed andexploited for privatized benefit). Such changes call for an increased focus on land in terms offunction, rather than in terms of boundaries. Such an approach is the antithesis of the perception
I described earlier, in which it was thought important to decide whether a wetland is 'land' oris 'water'. And it is antithetical to the way in which some laws still formally treat surface waterand ground water as separate legal entities, even when they are demonstrably elements of asingle geo-hydrological system.
In addition, we need increasingly to come to terms with the need for proactive protective
laws, as contrasted with the traditional legal practice of focusing on after-the-fact remedies.
We have made some considerable progress in this respect in our modern air pollution andwater pollution laws. But the urgent issues of climate change that are at the forefront of today's
environmental agenda indicate how remiss we have often been in getting in front of problems
before they reach crisis proportions. This is in part due to a traditional mind-set about thestandards of proof needed to set the protective machinery of the law in motion, and our
traditional use of the law largely to provide after-the-fact remedies. Whether it goes by the46

name of a precautionary principle, or of simple prudence in adapting away from the excessesof the transformative economy, these are the some of the vital tasks that remain before us.
They constitute the unfinished agenda of environmental law.
I would like to end with a brief quotation from the American scientist Edward O.
Wilson, who in my opinion clearly and elegantly sets out the nature of the task before us. He
said12:“...it is reckless to suppose that biodiversity can be diminished indefinitely without
threatening humanity itself.....The ethical imperative should therefore be, first of all,prudence..... We should not knowingly allow any species or race to go extinct. And let
us go beyond mere salvage to begin the restoration of natural environments, in order toenlarge wild populations and stanch the hemorrhaging of biological wealth. There canbe no purpose more enspiriting than to begin the age of restoration, reweaving thewondrous diversity of life that still surrounds us.”
References
1. Joseph L. Sax, Liberating the Public Trust Doctrine From Its Historical Shackles, 14 Univ. Calif. (Davis)
Law Review 185 (No. 2, Winter, 1980).
2. Joseph L. Sax, Property Rights and the Economy of Nature [etc], 45 Stanford Law Review 1433 (1993).
3. Joseph L. Sax, Playing Darts With A Rembrandt: Public and Private Rights in Cultural Treasures (1999).
4. Joseph L. Sax, Heritage Preservation as a Public Duty: The Abbé Grégoire and the Origins of an Idea, 88Mich. L. Rev. 1142.
5. E.g., Lujan v. Defenders of Wildlife, 504 U.S. 555 (1992).
6. 16 U.S.C.A. §§ 1531-1544.
7. Rapanos v. United States, 126 S.Ct. 2208 (2006).
8. 33 U.S.C.A. § 1251 (Federal Water Pollution Control Act: Clean Water Act).
9. Joseph L. Sax, The Public Trust Doctrine in Natural Resource Law: Effective Judicial Intervention, 68
Michigan Law Review 471 (January, 1970).
10. National Audubon Society v. Superior Court, 33 Cal.3d 419 (1983).
11. In re Water Use Permit Applications for the Wai_hole Ditch, 94 Haw. 97 (2000).
12. The Diversity of Life (1992), at 347,351.

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Major Publications
Professor Joseph L. Sax
BookDefending the Environment (Chinese Language Edition, China University of Political Science and Law Press(2011).
ArticlesThe Unfinished Agenda of Environmental Law, 2007 Blue Planet Prize Commemorative Lecture, The Asahi GlassFoundation, Tokyo (October 18, 2007) (printed pamphlet).
Reprinted in 14 West-Northwest: Journal of Environmental Law & Policy 1 (No. 1, Winter 2008).
Reflections on Western Water Law, 34 Ecology L.Q. 299 (2007).
Environmental Law Forty Years Later: Looking Back and Looking Ahead, IUCN 3rd Colloquium Lectures, Sydney,in Michael I. Jeffery, Jeremy Firestone, Karen Bubna-Litich, eds., Biodiversity Conservation, Law +Livelihoods: Bridging the North-South Divide (Cambridge Univ. Press., 2008), ISBN 978-0-521-88503-4, 664
pp.
Article on Env. Law in vol. 1, Encyclopedia of Environmental. Ethics and Philosophy (J. Baird Callicott & Robert
Frodeman, eds. In chief,, Macmillan R Reference USA, Gale Cengage Learning, 2009), at pp. 348-354).
Our Precious Water Resources: Learning from the Past, Securing the Future, in Trevor Daya-Winterbottom, ed.,Resource Management Theory & Practice (Resource Management Law Ass’n of New Zealand, Inc., 2009), at
30-53.
The Property Rights Sweepstakes: Has Anyone Held the Winning Ticket?, 34 Vermont L. Rev. 157 (2009).
Land Use Regulation: Time to Think About Fairness, 50 Nat.Res.J. 455 (No. 2, Spring, 2010).
The Accretion/Avulsion Puzzle: Its Past Revealed, Its Future Proposed, 23 Tulane Env.L.J. 305 (Summer 2010).
Excerpt reprinted in Josh Eagle & Margaret R. Caldwell, Coastal Law (Aspen Publishers, 2011).
Some Unorthosdox Thoughts About Rising Sea Levels, Beach Erosion and Property Rights, 11 Vt.J. Env. L. 641(Spring 2010).
Ownership, Property and Sustainability, The Wallace Stegner Lecture, University of Utah (2010), in 31 Utah Env.
L. Rev. 1 (2011).
Also published in pamphlet form by the Univeristy of Utah Press (2011).
Environmental Disruption and Landowner Obligations: Time for Some New Thinking, 40 Research on
Environmental Disruption no. 1 (Summer 2010) (Japan, ISSN 0918-7537), at 5.
Public Benefit Obligations and Legacy Stewardship Activities of Artist-Endowed Foundations: Are They In
Conflict?, in vol 2, The Artist as Philanthropist (The Aspen Institute Program on Philanthropy & Social
Innovation (Nov. 2010) at 369-380. [www.aspeninstitute.org/psi/a-ef-report].
Environmental Disruption and Landowner Obligations: Time for Some New Thinking, 40 Research on
Environmental Disruption 2, no. 1 (Summer 2010) [in Japanese].

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