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Transcript
Unit 1: Introduction to APES
Chapters 1, 6, 7
This set of notes is much longer
than typical notes for this class will
be because it contains so much
background information. Do not be
intimidated by the number of slides,
just take the time to read and
understand the material thoroughly
in conjunction with the textbook in
preparation for your quiz and test.
© 2011 Pearson Education, Inc.
Chapter 1
Science and Sustainability: An Introduction to
Environmental Science
Environmental Science


Environment: all the living and non-living things around us (Animals, plants, forests, farms, etc., Continents,
oceans, clouds, ice caps, Structures, urban centers, living spaces, Social relationships and institutions…..its a
long list!)
Environmental science is the study of:

How the natural world works and how the environment affects humans and vice versa

We need to understand our interactions with the environment, to creatively solve environmental problems
Global conditions are rapidly changing, we are also rapidly gaining knowledge and the opportunity to
solve problems is still available
An interdisciplinary field
 Natural sciences: examines the natural world (Environmental science programs)
 Social sciences: examines values and human behavior (Environmental studies programs)




The fundamental insight of environmental science: Humans depend on a healthy, functioning planet, We are
part of the natural world, but we can also change it, our interactions with its other parts matter a great deal
We depend completely on the environment for survival

Increased health, longer lives, wealth, mobility, leisure

But natural systems have been degraded by pollution, soil erosion, species extinction, etc.

Environmental changes threaten long-term health and survival
© 2011 Pearson Education, Inc.
We rely on natural resources and
ecosystem services


Natural resources = substances and energy sources needed for survival, Natural resources are
“goods” produced by nature
 Renewable natural resources: can be replenished
 Perpetually renewed: sunlight, wind, wave energy
 Renew themselves over short periods: timber, water, soil
 These can be destroyed
 Nonrenewable natural resources: unavailable after depletion
 Oil, coal, minerals
Earth’s natural resources provide “services” to us
 Ecosystem services: arise from the normal functioning of natural services
 Purify air and water, cycle nutrients, regulate climate
 Pollinate plants, receive and recycle wastes
 We degrade ecosystem services by depleting resources, destroying habitat, generating pollution
 Increased human affluence has intensified degradation
© 2011 Pearson Education, Inc.
Human population growth amplifies
impacts



There are over 6.9 billion
humans
Agricultural revolution
 Crops,
livestock
 Stable
food supplies
Industrial revolution
 Urbanized
society powered
by fossil fuels (oil, gas, coal)
 Sanitation
and medicines
 Pesticides
and fertilizers
© 2011 Pearson Education, Inc.
Resource consumption exerts pressures
•
•
•
•
Exploitation and consumption of resources is also a problem
Garret Hardin’s tragedy of the commons: unregulated
exploitation of public resources leads to depletion and damage
– Soil, air, water
Resource users are motivated by self interest
– They increase use until the resource is gone
Solutions to the tragedy of the commons?
– Private ownership?
– Voluntary organization to enforce responsible use?
– Governmental regulations?
© 2011 Pearson Education, Inc.
Our “ecological footprint” and overshoot




Affluence increases consumption
Ecological footprint: the
environmental impact of a person
or population
 The area of biologically
productive land + water
 To supply raw resources and
dispose/recycle waste
People in rich nations have much
larger ecological footprints
Overshoot: humans have surpassed
the Earth’s capacity to support us

If everyone consumed the amount of
resources the U.S. does, we would need
4.5 Earths!

We are using renewable resources 30% faster
than they are being replenished
© 2011 Pearson Education, Inc.
Environmental science

Civilizations have fallen after degrading the environment,
Civilizations succeed or fail according to how they interact with
the environment along with how they respond to problems
 Easter Island, Greek and Roman empires
 Once lush regions (i.e. Iraq) are now barren deserts

Environmental science can help build a better world

Environment  impacts  Humans

Its applied goal: solving environmental problems
 Solutions are applications of science
© 2011 Pearson Education, Inc.
What is an “environmental problem”?

Whether an environmental
condition is seen as a problem
depends on the individual and
situation
 Ex.:
the pesticide DDT
 In
malaria-infested Africa: welcome
because it kills malaria-carrying
mosquitoes
 In America: not welcome, due to
health risks
People also differ in their awareness of problems,
depending on who they are, where they live, what they do
© 2011 Pearson Education, Inc.
Environmental science is not environmentalism
•
Environmental science
–
–
•
Pursues knowledge about
the environment and our interactions
with it
Scientists try to remain
objective and free from bias
Environmentalism
–
–
A social movement
Tries to protect the natural world
from human-caused changes
© 2011 Pearson Education, Inc.
Science asks and answers questions


It is an incremental approach to the truth
Scientists do not simply accept conventional wisdom
 They

judge ideas by the strength of their evidence
Observational (descriptive) science: information is
gathered about organisms, systems, processes, etc.
 Cannot
be manipulated by experiments
 Phenomena are observed and measured
 Used in astronomy, paleontology, taxonomy, genomics

Hypothesis-driven science: targeted research
 Experiments
test hypotheses using the scientific method
© 2011 Pearson Education, Inc.
The scientific method: a traditional
approach that’s part of a larger process

It tests ideas


Scientists in different
fields approach problems
differently
Assumptions:
The universe works
according to unchanging
natural laws
 Events arise from causes,
and cause other events
 We use senses and reason
to understand natural
processes
It guards against faulty
research



Includes peer review,
publication,
competition for funding
© 2011 Pearson Education, Inc.
Experiments test the validity of a
hypothesis




Variable: a condition that can change
Independent variable: can be manipulated
Dependent variable: depends on the independent variable
Controlled experiment: the effects of all variables are
controlled




Except the independent variable whose effect is being tested
Control: an unmanipulated point of comparison
Quantitative data: uses numbers
Qualitative data: does not use numbers
© 2011 Pearson Education, Inc.
Hypotheses are tested in different ways
Manipulative experiments yield the
strongest evidence
• Reveals causal relationships
• Lots of things can’t be manipulated
Natural tests show real-world
complexity
• Results are not neat and clean
• Answers aren’t black and white
© 2011 Pearson Education, Inc.
Theories and paradigm shifts
•
Theory: a well-tested and widely accepted explanation
–
•
Paradigm shift – a dramatic upheaval in thought
–
•
Consolidates widely-supported, related hypotheses
It changes the dominant viewpoint
Wicked problems: are complex, with no simple solution
–
I.e. environmental problems
© 2011 Pearson Education, Inc.
Sustainability and the future of our world

Sustainability: we must live within our planet’s means
 So
the Earth and its resources can sustain us and all life for
the future

Sustainability involves conserving resources
 Developing
long-term solutions
 Keeping fully functioning ecosystems

Natural capital: Earth’s total wealth of resources
 We
are withdrawing it faster that it’s being replenished
 We must live off Earth’s natural interest (replenishable
resources), not its natural capital
© 2011 Pearson Education, Inc.
Population & consumption




Population growth amplifies all human impacts
 The growth rate has slowed, but we still add
more than 200,000 people to the planet each
day
Resource consumption has risen faster than
population
 The 20 wealthiest nations have 55 times the
income of the 20 poorest nations
 Three times the gap that existed 40 years ago
Not everyone benefits equally from rising
affluence
The ecological footprints of countries vary greatly
 The U.S. footprint is much greater than the
world’s average
© 2011 Pearson Education, Inc.
We face challenges in agriculture

Technology expanded food production
–
–
–
–
Nearly half of the land surface is used for agriculture
Chemical fertilizers and pesticides poison and change natural systems
Erosion, climate change and poor management destroy millions of acres
each year
Agriculture, urban sprawl, and other land uses have substantially affected
most of the landscape of all nations
© 2011 Pearson Education, Inc.
We face challenges in pollution
•
•
Since the Industrial Revolution, atmospheric carbon dioxide
concentrations have risen by 39%, to the highest level in
800,000 years
Waste products and artificial chemicals
–
–
–
•
Are used in farms, industries, and households
Contaminate land, water and air
Kill millions of people
Humans are affecting the Earth’s climate
–
–
–
–
Melting glaciers
Rising sea levels
Impacted wildlife, forests, health and crops
Changed rainfall and increased storms
© 2011 Pearson Education, Inc.
We face challenges in biodiversity
•
•
Biodiversity: the cumulative
number and diversity of living
things
Human actions have driven many
species extinct
–
–
–
Biodiversity is declining
dramatically
We are setting in motion a mass
extinction event
Biodiversity loss may be our
biggest problem; once a species
is extinct, it is gone forever
© 2011 Pearson Education, Inc.
The Millennium Ecosystem Assessment
•
•
The most comprehensive scientific assessment of the
condition of the world’s ecological systems
In 2005, 2000 of the world’s leading scientists from
100 nations reported :
–
–
–
–
Humans have drastically altered ecosystems
These changes have contributed to human well-being
and economic development, but at a cost
Environmental degradation could get much worse
Degradation can be reversed, but it requires work
© 2011 Pearson Education, Inc.
Our energy choices will affect our
future we need sustainable solutions
The lives we live today are due to fossil fuels
– Machines
– Chemicals
– Transportation
– Products
• Fossil fuels are a one-time bonanza
– Supplies will certainly decline
– We have used up ½ of the world’s oil supplies; how will we handle
this imminent fossil fuel shortage?
 We must develop solutions that protect both our quality of life and the
environment
 Renewable energy and efficiency
 Organic agriculture
 Legislation and technology to reduce pollution
 Protect species and their habitat
 Recycling, decreasing waste
 Decrease greenhouse gas emissions
© 2011 Pearson Education, Inc.
•
Are things getting better or worse?
•
Many people think environmental conditions are better
–
•
Some think things are much worse
–
•
Cornucopians: human ingenuity will solve any problem no
matter how we act and treat the planet
Cassandras: predict doom and disaster, do not think we can
continue on our current path without consequences
How can you decide who is correct?
–
–
–
Are the impacts limited to humans, or are other organisms or
systems involved?
Are the proponents thinking in the long or short term?
Are they considering all costs and benefits?
© 2011 Pearson Education, Inc.
Sustainable development

Development: purposeful changes to improve the quality of
life


The poor suffer the most from environmental degradation
Sustainable development: the use of resources to satisfy
current needs
Without compromising future availability of resources
Involves environmental protection, economic well-being and social
equity
 Humans cannot exist without an intact, functioning ecosystem
 It values and prioritizes environmental protection
 Human-made capital cannot substitute for natural capital


© 2011 Pearson Education, Inc.
Will we develop in a sustainable way?

The triple bottom line:
sustainable solutions that meet
 Environmental
protection
 Economic goals
 Social equity

Humans must apply knowledge
from the sciences to
 Limit
environmental impacts
 Maintain functioning environmental
systems
We must make an ethical commitment to current and
future generations
© 2011 Pearson Education, Inc.
Chapter 6
Environmental Ethics and Economics: Values and
Choices
Culture and worldview



Our relationship with the environment depends on assessments of costs and benefits

But culture and worldview also affect this relationship

Ethics and economics give us tools to pursue the “triple bottom line” of sustainability
Culture = knowledge, beliefs, values, and learned ways of life shared by a group of people
Worldview = a person’s or group’s beliefs about the meaning, operation, and essence of the world,
how a person sees his or her place in the world

Many factors shape a person’s worldview

Religious and spiritual beliefs shape our worldview and perception of the environment

Community experiences shape attitudes

Political ideology: government’s role in protecting the environment

Economics

Vested interest = the strong interest of an individual in the outcome of a decision

Results in gain or loss for that individual
© 2011 Pearson Education, Inc.
Environmental ethics and Ethical
Standards




Ethics = Moral principles or values held by a person or society

Relativists = ethics varies with social context

Universalists = right and wrong remains the same across cultures and
situations
Ethics is a prescriptive pursuit: it tells us how we ought to behave
Ethical standards = criteria that help differentiate right from
wrong

Categorical imperative: the golden rule

How can this apply to environmental science?
Principle of utility = something right produces the most practical
benefits for the most people

A uranium mine could benefit thousands of people
© 2011 Pearson Education, Inc.
We value things in two ways


How we value something affects how we treat it
Instrumental (utilitarian) value: valuing something for its
pragmatic benefits by using it


Animals are valuable because we can eat them
Intrinsic (inherent) value: valuing something for its own
sake because it has a right to exist
Animals are valuable because they live their own lives
 People have granted intrinsic value and ethical consideration to
more and more people and things (Including animals,
communities, and nature)
 Non-Western cultures often have broader ethical domains


Things can have both instrumental and intrinsic value

But different people emphasize different values
© 2011 Pearson Education, Inc.
Environmental ethics


Environmental ethics = application of ethical standards to relationships
between human and nonhuman entities
Hard to resolve: it depends on the person’s ethical standards and domain
of ethical concern
Should we save
resources for future
generations?
Should humans drive
other species to
extinction?
When is it OK to destroy a
forest to create jobs?
Is it OK for some
communities to be exposed
to more pollution?
© 2011 Pearson Education, Inc.
Three ethical perspectives



Anthropocentrism = only humans have intrinsic value
Biocentrism = some nonhuman life has intrinsic value
Ecocentrism = whole ecological systems have value

A holistic perspective that preserves connections
© 2011 Pearson Education, Inc.
History of Environmental Ethics
John Ruskin: people no longer appreciated nature
•
•
Ralph Waldo Emerson, Henry David Thoreau’s Walden
•
•
The Industrial Revolution increased consumption and pollution
•
Transcendentalism = nature is a manifestation of the divine
•
People need to experience nature
John Muir had an ecocentric viewpoint
•
Unspoiled nature should be protected
for its own intrinsic value, this is preservation
•
He was a tireless advocate for wilderness
© 2011 Pearson Education, Inc.
History of environmental ethics
•
Gifford Pinchot had an anthropocentric
viewpoint
•
•
Use natural resources wisely for the
greatest good for the most people
(the utilitarian standard) this is
conservation
Aldo Leopold believed the land ethic
changes the role of people from
conquerors of the land to citizens of it
•
•
Healthy ecological systems depend on
protecting all
parts
The land ethic can help guide decision
making
© 2011 Pearson Education, Inc.
History of environmental ethics
•
•
Ecofeminism = the female worldview interprets the world
through interrelationships and cooperation
•
Some scholars feel that male-dominated societies cause both social
and environmental problems
•
Domination and competition degrade women and the environment
Environmental justice = the fair and equitable treatment of all
people regarding environmental issues
–
The poor and minorities have less information, power, and money
–
Significant inequities remain despite progress toward racial equality
–
–
Economic gaps between rich and poor have widened
Minorities and the poor still suffer substandard environmental conditions
–
Examples: Native American miners, Hurricane Katrina
© 2011 Pearson Education, Inc.
Environmental justice: an international
issue


Pollution can not be stopped at the boarders of
countries: how would you stop air pollution at a
boarder?
Wealthy nations impose pollution on poorer nations
 Companies
pay poor nations to take their hazardous waste
 It
is dumped illegally
 It may be falsely labeled as harmless or beneficial
 Workers are uninformed or unprotected

The Basel Convention prohibits international export of
waste but illegal trade and dumping continue
 The
United States has not ratified this treaty
© 2011 Pearson Education, Inc.
The environment vs. economics
Friction occurs between ethical and economic impulses
•
•
Is there a trade-off between economics and the
environment?
–
People say protection costs too much money, interferes with
progress, or causes job loses
–
But environmental protection is good for the economy
Traditional economic thought ignores or underestimates
contributions of the environment to the economy
•
–
Human economies depend on the environment
© 2011 Pearson Education, Inc.
Economics
Economics studies how people use resources to provide goods and services
in the face of demand
•
Economy = a social system that converts resources into: Goods
(manufactured materials that are bought) and Services (work done for
others as a form of business)
•
•
Types of Economies
•
Subsistence economy = people get their daily needs directly from nature
or their own production, they do not purchase or trade products
•
Capitalist market economy = buyers and sellers interact to determine
prices and production of goods and services
•
Centrally planned economy = the government determines how to
allocate resources
•
Mixed economy = governments intervene to some extent
© 2011 Pearson Education, Inc.
Governments intervene in a market
economy


The United States has a mixed market based on a
capitalist economy
Even in mixed market economies, governments
intervene to:
–
Eliminate unfair advantages held by single buyers or sellers
–
Provide social services (national defense, medical care,
education)
–
Provide safety nets for elderly, disaster victims, etc.
–
Manage the commons
–
Mitigate pollution and other threats to health and quality of
life
© 2011 Pearson Education, Inc.
The economy exists within the
environment
•
Economies receive inputs
(resources)
–
–
•
Process them
Discharge outputs (waste)
Traditional economics (only
the yellow box in the
diagram)
–
–
–
Ignores the environment
Resources are “limitless”
Wastes are absorbed at no
cost
© 2011 Pearson Education, Inc.
Environmental systems support
economies
•
•
•
Environmental goods = natural resources (sun’s energy,
water, trees, rocks, fossil fuels)
Ecosystem services = essential services support the
life that makes economic activities possible
* Soil formation
* Pollination
* Water purification
* Nutrient cycling
* Climate regulation
* Waste treatment
Economic activities affect the environment
–
Depleting natural resources, generating pollution
© 2011 Pearson Education, Inc.
Classical versus Neoclassical
Economics
Classical economics: when people pursue economic selfinterest in a competitive marketplace
•
•
•
Adam Smith said The market is guided by an “invisible hand”
•
Society benefits
•
This idea is a pillar of free-market thought today
•
It is also blamed for economic inequality between rich and
poor
•
Critics feel that market capitalism promotes environmental
degradation
Neoclassical economics: takes into account psychology
•
What psychological factors underlie consumer choices?
•
Market prices reflect supply vs. demand
•
Buyers vs. sellers
•
The “right” quantities of a product are produced
•
“Optimal” levels of pollution, resource use
© 2011 Pearson Education, Inc.
Cost-benefit analysis
•
Cost-benefit analysis = costs of a proposed action are
compared to benefits that result from the action
–
•
Cost-benefit analysis is controversial: not all costs and
benefits can be identified or defined
–
–
•
If benefits > costs: pursue the action
It is easy to quantify wages paid to miners
But hard to assess the cost of a scarred landscape
Monetary benefits are overrepresented
–
–
Analysis is biased in favor of economic development
Biased against environmental protection
© 2011 Pearson Education, Inc.
Neoclassical economics assume resources
are unlimited


Capitalist market systems operate according to neoclassical economics

Enormous wealth and jobs are generated

Environmental problems are also created
Assumptions of neoclassical economics:

Resources are infinite or substitutable or a replacement resource will be found

Costs and benefits are internal (see next slides for explanation)

Long-term effects are discounted (see next slides for explanation)

Growth is good (see next slides for explanation)

Goods and services are treated as “free gifts of nature”, Infinitely abundant, resilient, and
substitutable

But Earth’s resources are limited

Nonrenewable resources can be depleted

Renewable resources (e.g., forests) can also be depleted
© 2011 Pearson Education, Inc.
Neoclassical systems assume costs
and benefits are internal

Only the buyer and seller experience costs
and benefits



Pricing ignores social, environmental, or
economic costs of pollution and degradation
Externalities = costs or benefits involving
people other than the buyer or seller
External costs = borne by someone not
involved in a transaction

External costs include water pollution, health
problems, property damage, and harm to other
organism

Governments develop laws and regulations

But how do you assign monetary value to illness?
© 2011 Pearson Education, Inc.
Neoclassical systems assume long
term effects are discounted


A future event counts less than a present one
Discounting = short-term costs and benefits are more
important than long-term costs and benefits
 Present
conditions are more important than future ones
 Cutting trees now brings in more money than cutting them
in the future

Policymakers ignore long-term consequences of
actions
 Puts
costs of degradation, resource depletion, pollution on
to future generations
© 2011 Pearson Education, Inc.
Neoclassical systems assume growth is
good (we live in a growth oriented economy)

Economic growth = an increase in an economy’s production and consumption of
goods


Promoting economic growth creates opportunities for poor to become wealthier




Affluenza = material goods do not always bring contentment

Runaway growth can destroy our economic system
Growth is used to measure progress
All economic growth is seen as good and necessary
Modern global economic growth is unprecedented


Progress is measured by economic growth
But economic activity and true wealth are not the same


It is necessary to maintain social order
Higher trade, production, amount and value of goods
The United States has a “more and bigger” attitude

Americans are in a frenzy of consumption
© 2011 Pearson Education, Inc.
Is the growth paradigm good for us?
The dramatic rise in per-person consumption has severe
environmental consequences
Can growth go on forever?



Economic growth comes from:

Increased inputs (labor, natural resources)

Economic development = improved efficiency of production (technology, ideas, equipment)
Uncontrolled economic growth is unsustainable

Technology can push back limits, but not forever

Efficient resource extraction and production perpetuate the illusion that resources are unlimited
Many economists believe technology can solve anything
© 2011 Pearson Education, Inc.
Cornucopians vs. Cassandras
(Remember these from Chapter 1?)

Cornucopians = economists, businesspeople,
policymakers
 Improved
technology allows continued economic growth
 Human innovation, technologies, and market forces
increase access to resources and avoid depletion

Cassandras = scientists and others
 Limits
to Growth, Beyond the Limits, Limits to Growth: The
Thirty-year Update
 Computer models predict economic collapse as resources
become scarce
© 2011 Pearson Education, Inc.
Other types of economies



Environmental economics = unsustainable economies have high population growth
and inefficient resource use
 Modify neoclassical economics to increase efficienc and calls for reform
Ecological economics = civilizations cannot overcome environmental limitations
 Endless economic growth is not possible, this calls for revolution
Steady-state economies mirror natural ecological systems—they neither grow nor
shrink
 As resources became harder to find, economic growth slows and stabilizes (John
Stuart Mill, 1806–1873)
 Individuals and societies exist on steady flows of natural resources
 Herman Daly does not think a steady state will evolve on its own
 We must fundamentally change our economics
 This does not mean a lower quality of life
 Technology and behavior will enhance sustainability
© 2011 Pearson Education, Inc.
Measuring Economic Progress:
GDP versus GPI


Gross Domestic Product (GDP) = the total
monetary value of goods and services a nation
produces

Does not account for nonmarket value

Does not express only desirable economic activity

Pollution, oil spills, disasters, etc. increase GDP
Genuine Progress Indicator (GPI) =
differentiates between desirable and
undesirable economic activity

Positive contributions (e.g., volunteer work) not
paid for with money are added to economic
activity

Negative impacts (crime, pollution) are
subtracted
© 2011 Pearson Education, Inc.
More green accounting indicators

These indicators give a more accurate indication of a
nation’s welfare


Net Economic Welfare (NEW) = adjusts GDP by adding the
value of leisure time and personal transactions



Very controversial, hard to practice
While deducting costs of environmental degradation
Human Development Index = assesses a nation’s standard
of living, life expectancy, and education
Sustainable Economic Welfare (ISEW) = based on income,
wealth distribution, resource depletion
© 2011 Pearson Education, Inc.
Valuing ecosystem goods and services

Our society mistreats the very systems that sustain it




The market ignores/undervalues ecosystem values
Nonmarket values = values not included in the price of a good or
service (e.g., ecological, cultural, spiritual)
Contingent valuation = uses surveys to determine how much
people are willing to pay to protect or restore a resource

Measures expressed preferences

But since people don’t really pay, they may overinflate values
Revealed preferences = revealed by actual behavior

Time, money, effort people spend

Measures actual costs of restoration, cleanup, etc.
© 2011 Pearson Education, Inc.
The global value of all ecosystem
services

The global economic
value of all ecosystem
services equals $46
trillion


More than the GDP
of all nations
combined
Protecting land gives
100 times more value
than converting it to
some other use
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Markets can fail and can counter
failure

Market failure = occurs when markets ignore the environment’s positive impact and
the negative effects of activities on the environment or people (external costs)


Government intervention counters market failure

Laws and regulations

Green taxes = penalize harmful activities

Economic incentives to promote fairness, conservation, and sustainability (e.g., pollution
permits)
Another intervention is Ecolabeling which tells consumers which brands use
environmentally benign processes, this is a powerful incentive for businesses to change


Dolphin-safe tuna, organic food
Finally, Socially responsible investing in sustainable companies is another
intervention

$2.7 trillion in 2007
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Corporations are responding to concerns
and offering “green” options

Industries, businesses, and corporations make money by “greening” their operations

Ben & Jerry’s (ice cream), Patagonia (clothing)

Industries donate to environmental groups, preserve land, etc.

Manufacturers use recycled materials, cut energy use, etc.

Local sustainable businesses

Large corporations are riding the “green wave” of consumer preference for sustainable products


Greenwashing: consumers are misled into thinking companies are acting more sustainably than
they are


“Pure” bottled water may not be safer or better
Any changes made by large companies will help


McDonald’s, Starbucks, Intel, Ford, Dow, etc.
Hewlett-Packard, Wal-Mart
Corporate actions hinge on consumer behavior

People must support sustainable economics
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Chapter 7
Environmental policy


Policy = a formal set of general plans and
principles to address problems and guide
decision making
Public policy = made by governments


Environmental policy = pertains to human
interactions with the environment



Laws, regulations, orders, incentives, and practices
intended to advance societal welfare
Regulates resource use/reduces pollution to
promote welfare and/or protect resources
Science, ethics, and economics help formulate
policy

Science = provides information and analysis

Ethics and economics = clarify how society can
address problems
Government interacts with citizens,
organizations, and the private sector
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Policies prevent the tragedy of the
commons and free riders



Capitalist markets are driven by short-term profit not long-term social
or environmental stability, there is little incentive to minimize impacts
 Market failure justifies government intervention to develop policies to
prevent Tragedy of the Commons and Free Riders
Tragedy of the commons = commonly held resources will become
overused and degraded
 Best prevented by oversight and regulations
 Traditional societies may safeguard against exploitation
 Privatization works if property rights are clear
 Does not work with air, water, etc.
Free riders = reducing pollution tempts people to cheat , free riders
avoid sacrifices made by others and get a “free ride”
 Private voluntary efforts are less effective than efforts mandated by
public policies that require all parties sacrifice equally
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Policies address external costs




Environmental policies aim to promote
fairness by dealing with external
costs
External costs = harmful impacts of
market transactions are borne by
people not involved in the transaction
Polluter pays principal = polluters
cover costs of impacts
Environmental policy goals = to
protect resources against the tragedy
of the commons and to promote
equity by eliminating free riders and
addressing external costs
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Many factors hinder environmental
policy


Why are environmental laws challenged, ignored, and
rejected by citizens and policymakers?
Environmental policy involves government regulations


Property owners and businesspeople think regulations are
inconvenient and cause economic loss
Problems develop gradually and over the long term

Human behavior is geared toward short-term needs

Businesses opt for short-term economic gain

News media have short attention spans

Politicians act out of short-term interest
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Framework of U.S. policy federal
policy





The U.S. has pioneered innovative policies and
are role models and influence for other nations
Legislative branch = Congress creates statutory
law
Executive branch = enacts or vetoes legislation

Laws are implemented and executed by
agencies

Executive orders = specific legal instructions
for government agencies
Judicial branch = interprets laws

Precedents = guides for later cases

Lawsuits are filed for and against
protection
Administrative agencies = the “fourth branch”


Established by the president or Congress as
a source of policy through regulation, they
monitor and enforce compliance
Regulations = specific rules or requirements to achieve
objectives of broadly written statutory laws
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State and local governmental policies

States, counties, and municipalities also generate environmental policies

They can experiment with novel concepts

California, New York, and Massachusetts have strong environmental laws, well-funded
agencies, and citizens value protecting the environment




State laws cannot violate principles of the U.S. Constitution (If laws conflict,
federal laws take precedence). Rarely, federal laws may force states to change
Federal policymakers can give financial incentives to encourage change (this
works, if funds are adequate)
“Cooperative federalism” = an agency works with state agencies to achieve
national standards
Despite pressure to weaken laws, federal control is vital to protect all citizens

One national effort is more efficient than 50 efforts

Transboundary disputes are minimized
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Constitutional amendments



Fourteenth Amendment of the U.S. Constitution
 Prohibits denying “equal protection of its laws”
 The constitutional basis for environmental justice
Fifth Amendment = takings clause
 Bans the literal taking of private property
 Also bans regulatory taking, which deprives a property owner of economic
uses of the property
 Lucas v. South Carolina Coastal Council
 In 1992 the Supreme Court ruled that a state law intending to prevent
serious public harm violated the takings clause
 Lucas, a land developer, was allowed to build homes on beachfront
property
 Although a state agency had prohibited construction on the property
There is a sensitive balance between private rights and the public good
© 2011 Pearson Education, Inc.
Early U.S. environmental policy


From 1780s to the late 1800s, promoted settlement and extraction of resources

Increased prosperity for citizens and railroad companies and relieved
crowding in Eastern cities, but displaced millions of Native Americans

People believed land was infinite and inexhaustible
General Land Ordinances of 1785 and 1787




The federal government managed unsettled lands, surveying/readying them
for sale
Homestead Act (1862) = anyone could buy or settle on 160 acres of public land
General Mining Act (1878) = people could mine on public land for $5/acre with
no government oversight
Timber Culture Act (1873) = 160 acres to anyone promising to plant trees on
25% of that land
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The second wave of U.S. policy



Public perception and government policy shifted
because of problems caused by westward expansion
People began to understand that the West’s resources
were exhaustible and required legal protection
Yellowstone National Park, the world’s first national
park, opened in 1872
 Also,

national wildlife refuges, parks, and forests
Land management policies addressed soil conservation
 The
1964 Wilderness Act preserves pristine land
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The third wave of U.S. environmental
policy (Modern Policy)



Mid-to late-20th century people were better off
economically but lived with dirtier air, dirtier
water, and more waste and toxic chemicals
The public demanded more environmental
protection
Increased awareness of environmental problems
shifted public priorities and policies


Rachel Carson’s Silent Spring (1962) described
the ecological and health effects of pesticides
and chemicals
Most Americans support environmental protection

Millions of people celebrate Earth Day each
April
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The National Environmental Policy Act
(1970) and the EPA


The Council on Environmental Quality created the NEPA and began the modern
era of environmental policy
 Requires an Environmental Impact Statement (EIS) for any federal action
that might significantly impact the environment and forces the government
and businesses to evaluate the environmental impacts of a project
 Its cost-benefit approach usually does not halt projects
 It provides incentives to decrease damage and citizens are granted input
President Nixon’s executive order created the Environmental Protection
Agency (EPA)
 Conducts and evaluates research, monitors environmental quality , sets and
enforces standards for pollution levels, assists states in meeting standards and
goals, educates the public

The EPA is a leading agency in developing solutions to pollution
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Significant environmental laws

The public
demanded a
cleaner
environment
and
supported
tougher
environment
al legislation
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Modern policy and a possible 4th
wave?



Several factors converged to allow major advances in environmental policy in the
1960s and 1970s
 Wide evidence of environmental problems and people could visualize policies
to deal with problems, the political climate was ripe, with a supportive public
and leaders who were willing to act
Congress strengthened and elaborated laws in the 1980s
 Amendments to the Clean Water and Clean Air Acts
By 1990, many felt that regulations were too strict, attempts were made to weaken
federal laws by Reagan and George W. Bush


It is thought that typically Republicans do not support increasing environmental
policy, while Democrats do, but be careful to understand that this is a
generalization and is not always true
Current government (since 2008), has started increasing environmental movements,
this fourth wave of policy focuses on sustainability, safeguarding ecosystems while
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raising living standards
3 approaches to policy:
#1 Using the court system


Before legislation, lawsuits addressed U.S. policy issues
Tort law = deals with one entity harming another
 Nuisance
law = individuals suffering from pollution would
seek redress through lawsuits
 Courts make polluters stop through injunctions or fines
 But justices were reluctant to hinder industry

In Boomer v. Atlantic Cement Company, the company
had to pay people for damages but could still operate
 The
market decides between right and wrong
 This is not a viable option to prevent pollution
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3 approaches to policy:
#2 Government Control

Command-and-control approach: a regulating
agency sets rules or limits
 Threatening
 It

punishment for violators
brings cleaner air, water, safer workplaces, etc.
Government actions may be well-intentioned
 But
not well-informed
 Interest
groups—people seeking private gain—unduly
influence politicians and work against public interests

Citizens may view policies as restrictions on freedom
 Those
policies will not remain in force
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3 approaches to policy:
#3: Market control

Other approaches use innovation and efficiency to
benefit the public
 Aim
to internalize external costs
 Taxes discourage undesirable activities

Green taxes = tax environmentally harmful activities
 Businesses
reimburse the public for damage they cause
 The more pollution, the higher the tax payment
 Give companies financial incentives to reduce pollution with
freedom to decide how to do so
 But costs are passed on to consumers
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Subsidies promote certain activities

Subsidy = a government giveaway of cash or resources to encourage a particular activity

Tax break = helps an entity by relieving its tax burden


They have been used to support unsustainable activities

Nations give $1.45 trillion/year in harmful subsidies
Environmentally Harmful Subsidies

From 2002 to 2008, U.S. fossil fuel companies received $72 billion of taxpayer money, while renewable
energy received only $29 billion

The General Mining Act of 1872


Mining companies get $500 million–$1 billion in minerals from U.S.
public lands each year, but they
don’t pay a penny in royalties to taxpayers

The government has given away $250 billion in mineral resources

Mining activities have polluted 40% of Western watersheds
The U.S. Forest Service spends $35 million of taxpayer money
per year building roads for logging companies

Companies sell the trees for profit
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Harnessing market dynamics

Governments use financial incentives in direct and
selective ways
 Subsidies

and green taxes
Financial incentives and market dynamics can also help
in obtaining policy goals
 Ecolabeling
= sellers advertise that they use sustainable
practices
 Businesses win consumer confidence and outcompete less
sustainably produced brands
© 2011 Pearson Education, Inc.
Permit trading saves money


Permit trading = a government-created market in permits for an
environmentally harmful activies; businesses buy, sell, trade these permits
Cap-and-trade emissions trading system = the government sets pollution
levels (“caps”) and issues permits
 Polluters can buy, sell, and trade these permits, so pollution is reduced
overall, but does increase around polluting plants
 Companies have an economic incentive to reduce emissions
 A cap-and-trade system in the U.S. mandates lower sulfur dioxide
emissions
 Emissions have decreased by 43%
 Cuts were obtained cheaper and more efficiently than command-andcontrol regulation With no effects on supply or economic growth
 Markets in carbon emissions are sprouting up
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Market incentives and public-private
partnerships
Market Incentives

Municipalities charge residents for waste disposal, according to the amount of waste
generated

Some cities give rebates for buying water-efficient appliances

Power utilities give discounts to those buying efficient lightbulbs and appliances

Well-planned market incentives can reduce environmental impact while minimizing costs to
industry, thus easing concerns about government intrusion
Public-private partnership = a for-profit entity does the work

A private entity acts as overseer

Public policy goals will be achieved in a timely, cost-effective manner


Private entities try to maximize efficiency
It is challenging to design workable partnerships while serving both private and public
interests
© 2011 Pearson Education, Inc.
Seven steps to making environmental
policy
Creating environmental policy has several steps
Step 1: Identify a problem

This requires curiosity, observation, record keeping, and an awareness of
our relationship with the environment.
Step 2: Pinpoint causes of the problem
•
Involves scientific research
•
Risk assessment = judging risks a problem poses to health or the
environment
Step 3: Envision a solution

Risk management = developing strategies to minimize risk
 Involves social or political action
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Step 4: Get organized

Organizations are more effective than individuals
 But a motivated, informed individual can also succeed
Step 5: Cultivate access and influence
•
Lobbying = spending time and money to influence a politician
- Environmental advocates are not the most influential lobbyists
Step 6: Shepherd the solution into law



Prepare a bill, or draft law, containing solutions
Find members of the House and Senate to introduce the bill and shepherd it
through committees
The bill may become law or die in various ways
Step 7: Implement, assess, and interpret policy

Following a law’s enactment
 Administrative agencies implement regulations
 Policymakers and others evaluate the policy’s successes or failures
 The judicial branch interprets the law
Who influences the policy process?
Political Action Committees (PACs)

raise money for political campaigns

Corporations and industries can not make direct campaign contribution, so they
establish PACs to help candidates win
Science


Effective decisions are informed by scientific research
 A nation’s strength depends on its commitment to science
Sometimes policymakers ignore science
 They let political ideology determine policy
 Government scientists have had their work censored, suppressed, or edited and
their jobs threatened
 Unqualified people were put into power
 Most scientists greeted President Obama with relief
© 2011 Pearson Education, Inc.
International Environmental Policy

Environmental problems are not restricted by national borders

Customary law = practices or customs held by most cultures

Conventional law = from conventions or treaties


Montreal Protocol = nations agreed to reduce ozone-depleting chemicals

Kyoto Protocol = reduces fossil fuel emissions causing climate change
Nations can also make progress through multilateral agreements,
hard work, and diplomacy
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Organizations shape international
policy

International organizations influence nations through funding, peer pressure, and media attention

United Nations Environment Programme (UNEP)


The World Bank = one of the world’s largest funding sources for economic development (Dams, irrigation,
infrastructure)



Helps nations understand and solve environmental problems
Funds unsustainable, environmentally damaging projects
The European Union (EU) seeks to promote Europe’s unity, economic and social progress

Can sign binding treaties and enact regulations

Can also issue advisory directives

Sees environmental regulations as barriers to trade
The World Trade Organization (WTO) Represents multinational corporations and promotes free trade

Can impose penalties on nations that don’t comply with its directives

Interprets environmental laws as unfair barriers to trade


Brazil and Venezuela filed a complaint against U.S. regulations requiring cleaner-burning fuel, and the
WTO agreed with Brazil and Venezuela, despite threats to human health
Critics charge the WTO aggravates environmental problems
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NGOs


Nongovernmental
Organizations (NGOs) =
entities that influence
international policy
ENGOs (environmental NGOs)
= groups advocating for
environmental protection

Some do not get politically
involved

Others try to shape policy
through research, education,
lobbying, or protest
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International institutions weld influence

Globalization is making our world more interconnected
 Societies
and ecosystems are being changed at
unprecedented rates

Trade and technology allow increased consumption
 Consumptive

nations exert incredible impacts
Multinational corporations operate outside the reach of
national laws
 They
don’t have the incentive to conserve resources or act
sustainably

Organizations and institutions that shape policy are vital
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