Global commons

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Global commons is a term typically used to describe international, supranational, and global resource domains in which common-pool resources are found. Global commons include the earth's shared natural resources, such as the high oceans, the atmosphere and outer space and the Antarctic in particular. [1] Cyberspace may also meet the definition of a global commons.


Definition and usage

"Global commons" is a term typically used to describe international, supranational, and global resource domains in which common-pool resources are found. In economics, common goods are rivalrous and non-excludable, constituting one of the four main types of goods. [2] A common-pool resource, also called a common property resource, is a special case of a common good (or public good) whose size or characteristics makes it costly, but not impossible, to exclude potential users. Examples include both natural or human-made resource domains (e.g., a "fishing hole" or an irrigation system). Unlike global public goods, global common-pool resources face problems of congestion, overuse, or degradation because they are subtractable (which makes them rivalrous). [3]

The term "commons" originates from the term common land in the British Isles. [4] "Commoners rights" referred to traditional rights held by commoners, such as mowing meadows for hay or grazing livestock on common land held in the open field system of old English common law. Enclosure was the process that ended those traditional rights, converting open fields to private property. Today, many commons still exist in England, Wales, Scotland, and the United States, although their extent is much reduced from the millions of acres that existed until the 17th century. [5] There are still over 7,000 registered commons in England alone. [6]

The term "global commons" is typically used to indicate the earth's shared natural resources, such as the deep oceans, the atmosphere, outer space and the Northern and Southern polar regions, the Antarctic in particular. [7]

According to the World Conservation Strategy, a report on conservation published by the International Union for Conservation of Nature and Natural Resources (IUCN) in collaboration with UNESCO and with the support of the United Nations Environment Programme (UNEP) and the World Wildlife Fund (WWF):

"A commons is a tract of land or water owned or used jointly by the members of a community. The global commons includes those parts of the Earth's surface beyond national jurisdictions  — notably the open ocean and the living resources found there — or held in common — notably the atmosphere. The only landmass that may be regarded as part of the global commons is Antarctica ..." [8]

Today, the Internet, World Wide Web and resulting cyberspace are often referred to as global commons. [9] Other usages sometimes include references to open access information of all kinds, including arts and culture, language and science, though these are more formally referred to as the common heritage of mankind. [10]

Management of the global commons

The key challenge of the global commons is the design of governance structures and management systems capable of addressing the complexity of multiple public and private interests, subject to often unpredictable changes, ranging from the local to the global level. [11] As with global public goods, management of the global commons requires pluralistic legal entities, usually international and supranational, public and private, structured to match the diversity of interests and the type of resource to be managed, and stringent enough with adequate incentives to ensure compliance. [12] Such management systems are necessary to avoid, at the global level, the classic tragedy of the commons, in which common resources become overexploited. [13]

There are several key differences in management of resources in the global commons from those of the commons, in general. [14] There are obvious differences in scale of both the resources and the number of users at the local versus the global level. Also, there are differences in the shared culture and expectations of resource users; more localized commons users tend to be more homogeneous and global users more heterogeneous. This contributes to differences in the possibility and time it takes for new learning about resource usage to occur at the different levels. Moreover, global resource pools are less likely to be relatively stable and the dynamics are less easily understood. Many of the global commons are non-renewable on human time scales. Thus, resource degradation is more likely to be the result of unintended consequences that are unforeseen, not immediately observable, or not easily understood. For example, the carbon dioxide emissions that drive climate change continue to do so for at least a millennium after they enter the atmosphere [15] and species extinctions last forever. Importantly, because there are significant differences in the benefits, costs, and interests at the global level, there are significant differences in externalities between more local resource uses and uses of global-level resources.

Several environmental protocols have been established (see List of international environmental agreements) as a type of international law, "an intergovernmental document intended as legally binding with a primary stated purpose of preventing or managing human impacts on natural resources." [16] International environmental protocols came to feature in environmental governance after trans-boundary environmental problems became widely perceived in the 1960s. [17] Following the Stockholm Intergovernmental Conference in 1972, creation of international environmental agreements proliferated. [18] Due to the barriers already discussed, environmental protocols are not a panacea for global commons issues. Often, they are slow to produce the desired effects, tend to the lowest common denominator, and lack monitoring and enforcement. They also take an incremental approach to solutions where sustainable development principles suggest that environmental concerns should be mainstream political issues.

The global ocean

The global or world ocean, as the interconnected system of the Earth's oceanic (or marine) waters that comprise the bulk of the hydrosphere, is a classic global commons. [19] It is divided into a number of principal oceanic areas that are delimited by the continents and various oceanographic features. In turn, oceanic waters are interspersed by many smaller seas, gulfs, and bays. Further, most freshwater bodies ultimately empty into the ocean and are derived through the Earth's water cycle from ocean waters. The Law of the Sea is a body of public international law governing relationships between nations in respect to navigational rights, mineral rights, and jurisdiction over coastal waters. Maritime law, also called Admiralty law, is a body of both domestic law governing maritime activities and private international law governing the relationships between private entities which operate vessels on the oceans. It deals with matters including marine commerce, marine navigation, shipping, sailors, and the transportation of passengers and goods by sea. However, these bodies of law do little to nothing to protect deep oceans from human threats.

In addition to providing significant means of transportation, a large proportion of all life on Earth exists in its ocean, which contains about 300 times the habitable volume of terrestrial habitats. Specific marine habitats include coral reefs, kelp forests, seagrass meadows, tidepools, muddy, sandy and rocky bottoms, and the open ocean (pelagic) zone, where solid objects are rare and the surface of the water is the only visible boundary. The organisms studied range from microscopic phytoplankton and zooplankton to huge cetaceans (whales) 30 meters (98 feet) in length.

At a fundamental level, marine life helps determine the very nature of our planet. Marine life resources provide food (especially food fish), medicines, and raw materials. It is also becoming understood that the well-being of marine organisms and other organisms are linked in very fundamental ways. The human body of knowledge regarding the relationship between life in the sea and important cycles is rapidly growing, with new discoveries being made nearly every day. These cycles include those of matter (such as the carbon cycle) and of air (such as Earth's respiration, and movement of energy through ecosystems including the ocean). Marine organisms contribute significantly to the oxygen cycle, and are involved in the regulation of the Earth's climate. [20] Shorelines are in part shaped and protected by marine life, and some marine organisms even help create new land. [21]

The United Nations Environment Programme (UNEP) has identified several areas of need in managing the global ocean: strengthen national capacities for action, especially in developing countries; improve fisheries management; reinforce cooperation in semi-enclosed and regional seas; strengthen controls over ocean disposal of hazardous and nuclear wastes; and advance the Law of the Sea. Specific problems identified as in need of attention include [[Current sea level rise|rising sea levels]]; contamination by hazardous chemicals (including oil spills); microbiological contamination; ocean acidification; harmful algal blooms; and over-fishing and other overexploitation. [22] Further, the Pew Charitable Trusts Environmental Initiative program has identified a need for a worldwide system of very large, highly protected marine reserves where fishing and other extractive activities are prohibited. [23]


The atmosphere is a complex dynamic natural gaseous system that is essential to support life on planet Earth. A primary concern for management of the global atmosphere is air pollution, the introduction into the atmosphere of chemicals, particulates, or biological materials that cause discomfort, disease, or death to humans, damage other living organisms such as food crops, or damage the natural environment or built environment. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the Earth's ecosystems.

Pollution of breathable air is a central problem in the management of the global commons. Pollutants can be in the form of solid particles, liquid droplets, or gases and may be natural or man-made. Although controversial and limited in scope by methods of enforcement, in several parts of the world the polluter pays principle, which makes the party responsible for producing pollution responsible for paying for the damage done to the natural environment, is accepted. It has strong support in most Organisation for Economic Co-operation and Development (OECD) and European Community (EC) countries. It is also known as extended producer responsibility (EPR). EPR seeks to shift the responsibility dealing with waste from governments (and thus, taxpayers and society at large) to the entities producing it. In effect, it attempts to internalise the cost of waste disposal into the cost of the product, theoretically resulting in producers improving the waste profile of their products, decreasing waste and increasing possibilities for reuse and recycling.

The 1979 Convention on Long-Range Transboundary Air Pollution, or CLRTAP, is an early international effort to protect and gradually reduce and prevent air pollution. It is implemented by the European Monitoring and Evaluation Programme (EMEP), directed by the United Nations Economic Commission for Europe (UNECE). The Montreal Protocol on Substances that Deplete the Ozone Layer, or Montreal Protocol (a protocol to the Vienna Convention for the Protection of the Ozone Layer), is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances believed to be responsible for ozone depletion. The treaty was opened for signature on 16 September 1987, and entered into force on 1 January 1989. After more three decades of work the Vienna Convention and Montreal Protocol were widely regarded as highly successful, both in achieving ozone reductions and as a pioneering model for management of the global commons. [24]

Global dimming is the gradual reduction in the amount of global direct irradiance at the Earth's surface, which has been observed for several decades after the start of systematic measurements in the 1950s. Global dimming is thought to have been caused by an increase in particulates such as sulfate aerosols in the atmosphere due to human action. [25] It has interfered with the hydrological cycle by reducing evaporation and may have reduced rainfall in some areas. Global dimming also creates a cooling effect that may have partially masked the effect of greenhouse gases on global warming.

Global warming and climate change in general are a major concern of global commons management. The Intergovernmental Panel on Climate Change (IPCC), established in 1988 to develop a scientific consensus, concluded in a series of reports that reducing emissions of greenhouse gases was necessary to prevent catastrophic harm. Meanwhile, a 1992 United Nations Framework Convention on Climate Change (FCCC) pledged to work toward "stabilisation of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic [i.e., human-induced] interference with the climate system" (as of 2019 there were 197 parties to the convention, although not all had ratified it). [26] The 1997 Kyoto Protocol to the FCCC set forth binding obligations on industrialised countries to reduce emissions. These were accepted by many countries but not all, and many failed to meet their obligations. The Protocol expired in 2012 and was followed by the 2015 Paris Agreement in which nations made individual promises of reductions. However, the IPCC concluded in a 2018 report that dangerous climate change was inevitable unless much greater reductions were promised and carried out.

Polar regions

The eight Arctic nations Canada, Denmark ( Greenland and the Faroe Islands), Norway, the United States (Alaska), Sweden, Finland, Iceland, and Russia, are all members of the treaty organization, the Arctic Council, as are organizations representing six indigenous populations. The council operates on consensus basis, mostly dealing with environmental treaties and not addressing boundary or resource disputes. [27] Currently, the Antarctic Treaty and related agreements, collectively called the Antarctic Treaty System or ATS, regulate international relations with respect to Antarctica, Earth's only continent without a native human population. The treaty, entering into force in 1961 and currently having 50 signatory nations, sets aside Antarctica as a scientific preserve, establishes freedom of scientific investigation and bans military activity on that continent. [28]

Climate change in the Arctic region is leading to widespread ecosystem restructuring. [29] The distribution of species is changing along with the structure of food webs. Changes in ocean circulation appear responsible for the first exchanges of zooplankton between the North Pacific and North Atlantic regions in perhaps 800,000 years. These changes can allow the transmission of diseases from subarctic animals to Arctic ones, and vice versa, posing an additional threat to species already stressed by habitat loss and other impacts. Where these changes lead is not yet clear, but are likely to have far-reaching impacts on Arctic marine ecosystems.

Climate models tend to reinforce that temperature trends due to global warming will be much smaller in Antarctica than in the Arctic, [30] but ongoing research may show otherwise. [31] [32]

Outer space

Management of outer space global commons has been contentious since the successful launch of the Sputnik satellite by the former Soviet Union on 4 October 1957. There is no clear boundary between Earth's atmosphere and space, although there are several standard boundary designations: one that deals with orbital velocity (the Kármán line), one that depends on the velocity of charged particles in space, and some that are determined by human factors such as the height at which human blood begins to boil without a pressurized environment (the Armstrong line).

Space policy regarding a country's civilian space program, as well as its policy on both military use and commercial use of outer space, intersects with science policy, since national space programs often perform or fund research in space science, and also with defense policy, for applications such as spy satellites and anti-satellite weapons. It also encompasses government regulation of third-party activities such as commercial communications satellites and private spaceflight [33] as well as the creation and application of space law and space advocacy organizations that exist to support the cause of space exploration.

The Outer Space Treaty provides a basic framework for international space law. It covers the legal use of outer space by nation states. The treaty states that outer space is free for all nation states to explore and is not subject to claims of national sovereignty. It also prohibits the deployment of nuclear weapons in outer space. The treaty was passed by the United Nations General Assembly in 1963 and signed in 1967 by the USSR, the United States of America and the United Kingdom. As of mid-year, 2013 the treaty has been ratified by 102 states and signed by an additional 27 states.

Beginning in 1958, outer space has been the subject of multiple resolutions by the United Nations General Assembly. Of these, more than 50 have concerned the international co-operation in the peaceful uses of outer space and preventing an arms race in space. Four additional space law treaties have been negotiated and drafted by the UN's Committee on the Peaceful Uses of Outer Space. Still, there remain no legal prohibitions against deploying conventional weapons in space and anti-satellite weapons have been successfully tested by the US, USSR and China. The 1979 Moon Treaty turned the jurisdiction of all heavenly bodies (including the orbits around such bodies) over to the international community. However, this treaty has not been ratified by any nation that currently practices manned spaceflight.

In 1976 eight equatorial states (Ecuador, Colombia, Brazil, Congo, Zaire, Uganda, Kenya, and Indonesia) met in Bogotá, Colombia to make the "Declaration of the First Meeting of Equatorial Countries," also known as "the Bogotá Declaration", a claim to control the segment of the geosynchronous orbital path corresponding to each country. These claims are not internationally accepted.

The International Space Station programme is a joint project among five participating space agencies: NASA, the Russian Federal Space Agency (RSA), Japan Aerospace Exploration Agency (JAXA), European Space Agency (ESA), and Canadian Space Agency (CSA). National budget constraints led to the merger of three space station projects into the International Space Station. In 1993 the partially built components for a Soviet/Russian space station Mir-2, the proposed American Freedom, and the proposed European Columbus merged into this multinational programme. [34] The ownership and use of the space station is established by intergovernmental treaties and agreements. The ISS is arguably the most expensive single item ever constructed, [35] and may be one of the most significant instances of international cooperation in modern history.

According to the original Memorandum of Understanding between NASA and the RSA, the International Space Station was intended to be a laboratory, observatory and factory in space. It was also planned to provide transportation, maintenance, and act as a staging base for possible future missions to the Moon, Mars and asteroids. In the 2010 United States National Space Policy, it was given additional roles of serving commercial, diplomatic [36] and educational purposes. [37]


As a global system of computers interconnected by telecommunication technologies consisting of millions of private, public, academic, business, and government resources, it is difficult to argue that the Internet is a global commons. These computing resources are largely privately owned and subject to private property law, although many are government owned and subject to public law. The World Wide Web, as a system of interlinked hypertext documents, either public domain (like Wikipedia itself) or subject to copyright law, is, at best, a mixed good.

The resultant virtual space or cyberspace, however, is often viewed as an electronic global commons that allows for as much or more freedom of expression as any public space. Access to those digital commons and the actual freedom of expression allowed does vary widely by geographical area. Management of the electronic global commons presents as many issues as do other commons. In addition to issues related to inequity in access, issues such as net neutrality, Internet censorship, Internet privacy, and electronic surveillance arise. [38] However, the term global commons generally represents stateless maneuver space, where no nation or entity can claim preeminence, and since 100 percent of cyberspace is owned by either a public or private entity, although it is often perceived as such, cyberspace may not be said to be a true global commons.

See also

Related Research Articles

Montreal Protocol

The Montreal Protocol is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It was agreed on 16 September 1987, and entered into force on 1 January 1989. Since then, it has undergone nine revisions, in 1990 (London), 1991 (Nairobi), 1992 (Copenhagen), 1993 (Bangkok), 1995 (Vienna), 1997 (Montreal), 1998 (Australia), 1999 (Beijing) and 2016 (Kigali) As a result of the international agreement, the ozone hole in Antarctica is slowly recovering. Climate projections indicate that the ozone layer will return to 1980 levels between 2050 and 2070. Due to its widespread adoption and implementation it has been hailed as an example of successful international co-operation, with Kofi Annan quoted as saying that "perhaps the single most successful international agreement to date has been the Montreal Protocol". In comparison, effective burden sharing and solution proposals mitigating regional conflicts of interest have been among the success factors for the ozone depletion challenge, where global regulation based on the Kyoto Protocol has failed to do so. In this case of the ozone depletion challenge, there was global regulation already being installed before a scientific consensus was established. Also, overall public opinion was convinced of possible imminent risks.

Ozone layer Region of Earths stratosphere that absorbs most of the Suns ultraviolet radiation

The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains a high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in Earth's atmosphere as a whole is about 0.3 parts per million. The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometers (9 to 22 mi) above Earth, although its thickness varies seasonally and geographically.

Tragedy of the commons Self-interests causing depletion of a shared resource

In economic science, the tragedy of the commons is a situation in which individual users, who have open access to a resource unhampered by shared social structures or formal rules that govern access and use, act independently according to their own self-interest and, contrary to the common good of all users, cause depletion of the resource through their uncoordinated action. The concept originated in an essay written in 1833 by the British economist William Forster Lloyd, who used a hypothetical example of the effects of unregulated grazing on common land in Great Britain and Ireland. The concept became widely known as the "tragedy of the commons" over a century later after an article written by Garrett Hardin in 1968.

United Nations Environment Programme Aims to help solve environmental issues

The United Nations Environment Programme (UNEP) is responsible for coordinating responses to environmental issues within the United Nations system. It was established by Maurice Strong, its first director, after the United Nations Conference on the Human Environment in Stockholm in June 1972. Its mandate is to provide leadership, deliver science and develop solutions on a wide range of issues, including climate change, the management of marine and terrestrial ecosystems, and green economic development. The organization also develops international environmental agreements; publishes and promotes environmental science and helps national governments achieve environmental targets.

Global Environment Facility

The Global Environment Facility (GEF) was established on the eve of the 1992 Rio Earth Summit to help tackle our planet's most pressing environmental problems. The GEF unites 184 countries in partnership with international institutions, civil society organizations (CSOs), and the private sector to address global environmental issues while supporting national sustainable development initiatives. Since 1992, the GEF has provided close to $20.5 billion in grants and mobilized an additional $112 billion in co-financing for more than 4,800 projects in 170 countries. Through its Small Grants Programme (SGP), the GEF has provided support to nearly 24,000 civil society and community initiatives in 133 countries.

Natural environment All living and non-living things occurring naturally, generally on Earth

The natural environment or natural world encompasses all living and non-living things occurring naturally, meaning in this case not artificial. The term is most often applied to the Earth or some parts of Earth. This environment encompasses the interaction of all living species, climate, weather and natural resources that affect human survival and economic activity. The concept of the natural environment can be distinguished as components:

Global change

Global change refers to planetary-scale changes in the Earth system. The system consists of the land, oceans, atmosphere, polar regions, life, the planet's natural cycles and deep Earth processes. These constituent parts influence one another. The Earth system now includes human society, so global change also refers to large-scale changes in society and the subsequent effects on the environment.

International environmental agreement Treaties and protocols protecting the environment

An international environmental agreement or sometimes environmental protocol, is a type of treaty binding in international law, allowing them to reach an environmental goal. In other words, it is "an intergovernmental document intended as legally binding with a primary stated purpose of preventing or managing human impacts on natural resources."

The Group on Earth Observations (GEO) coordinates international efforts to build a Global Earth Observation System of Systems (GEOSS). It links existing and planned Earth observation systems and supports the development of new ones in cases of perceived gaps in the supply of environment-related information. It aims to construct a global public infrastructure for Earth observations consisting in a flexible and distributed network of systems and content providers.

Spacecraft cemetery Area in the southern Pacific Ocean where spacecraft have been routinely deposited

The spacecraft cemetery, known more formally as the South Pacific Ocean Uninhabited Area, is a region in the southern Pacific Ocean east of New Zealand, where spacecraft that have reached the end of their usefulness are routinely de-orbited and destroyed. The area is roughly centered on the "Point Nemo" oceanic pole of inaccessibility, the location furthest from any land.

Sustainability Process of maintaining change in a balanced fashion

Sustainability is the capacity to endure in a relatively ongoing way across various domains of life. In the 21st century, it refers generally to the capacity for Earth's biosphere and human civilization to co-exist. For many, sustainability is defined through the interconnected domains of environment, economy and society. Despite the increased popularity of the term "sustainability" and its usage, the possibility that human societies will achieve environmental sustainability has been, and continues to be, questioned—in light of environmental degradation, biodiversity loss, climate change, overconsumption, population growth and societies' pursuit of unlimited economic growth in a closed system.

Index of environmental articles Wikipedia index

The natural environment, commonly referred to simply as the environment, includes all living and non-living things occurring naturally on Earth.

Common heritage of humanity Principle of international law

Common heritage of mankind is a principle of international law that holds that defined territorial areas and elements of humanity's common heritage should be held in trust for future generations and be protected from exploitation by individual nation states or corporations.

Planetary boundaries Concept involving Earth system processes

Planetary boundaries is a concept involving Earth system processes that contain environmental boundaries. It was proposed in 2009 by a group of Earth system and environmental scientists, led by Johan Rockström from the Stockholm Resilience Centre and Will Steffen from the Australian National University. The group wanted to define a "safe operating space for humanity" for the international community, including governments at all levels, international organizations, civil society, the scientific community and the private sector, as a precondition for sustainable development. The framework is based on scientific evidence that human actions since the Industrial Revolution have become the main driver of global environmental change.

Water resource policy

Water resource policy, sometimes called water resource management or water management, encompasses the policy-making processes and legislation that affect the collection, preparation, use, disposal, and protection of water resources. Water is necessary for all forms of life as well as industries on which humans are reliant, like technology development and agriculture. This global need for clean water access necessitates water resource policy to determine the means of supplying and protecting water resources. Water resource policy varies by region and is dependent on water availability or scarcity, the condition of aquatic systems, and regional needs for water. Since water basins do not align with national borders, water resource policy is also determined by international agreements, also known as hydropolitics. Water quality protection also falls under the umbrella of water resource policy; laws protecting the chemistry, biology, and ecology of aquatic systems by reducing and eliminating pollution, regulating its usage, and improving the quality are considered water resource policy. When developing water resource policies, many different stakeholders, environmental variables, and considerations have to be taken to ensure the health of people and ecosystems are maintained or improved. Finally, ocean zoning, coastal, and environmental resource management are also encompassed by water resource management, like in the instance of offshore wind land leasing.

This is a list of notable events relating to the environment in 1989. They relate to environmental law, conservation, environmentalism and environmental issues.

Common But Differentiated Responsibilities (CBDR) is a principle that was formalized in the United Nations Framework Convention on Climate Change (UNFCCC) of Earth Summit in Rio de Janeiro, 1992. The CBDR principle is mentioned in UNFCCC article 3 paragraph 1.., and article 4 paragraph 1. It was the first international legal instrument to address climate change and the most comprehensive international attempt to address negative impacts to global environment. The CBDR principle acknowledges that all states have shared obligation to address environmental destruction but denies equal responsibility of all states with regard to environmental protection.

K. Madhava Sarma

K. Madhava Sarma (1938-2010) was the first Executive Secretary of the Vienna Convention for the Protection of the Ozone Layer and the Montreal Protocol on Substances that Deplete the Ozone Layer from 1991 to 2000 at the United Nations Environment Programme (UNEP). He is considered one of the founders and leading figures in the success of the Montreal Protocol that established legally binding controls on the production and consumption of chemicals that cause ozone depletion and damage the stratospheric ozone layer which protects the Earth against the harmful effects of ultraviolet radiation. These effects include skin cancer, sunburn, permanent blindness and cataracts as well as harm to plants and animals. The Montreal Protocol was recognized by Kofi Annan, former Secretary General of the United Nations as being “perhaps the single most successful international environmental agreement to date" and went on to become the first treaty in the history of the United Nations to be universally ratified in 2008 by 197 countries.

Transnational environmental policies are efforts to confront global environmental issues such as climate change, ozone depletion, or marine pollution. Environmental policies are transnational when they include actors from at least two sovereign states. As of 2018, more than 1,800 multilateral environmental agreements are in effect.


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Further reading