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Week 1 Notes

by: Brittney Tilghman

Week 1 Notes Esc 1510

Brittney Tilghman
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About this Document

These notes break down the Framework of Environmental Science
Environmental Science 2
Dr. Bradley Reynolds
Class Notes




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This 3 page Class Notes was uploaded by Brittney Tilghman on Sunday August 28, 2016. The Class Notes belongs to Esc 1510 at University of Tennessee - Chattanooga taught by Dr. Bradley Reynolds in Fall 2016. Since its upload, it has received 20 views.


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Date Created: 08/28/16
Key Themes of Environmental Science • Environmental Science: systematic study of the environment and the proper place in it. - Highly interdisciplinary - Mix of natural and social sciences - Solves environmental problems • Environmental problems - Global warming and global climate change - Rising pollution - Ecosystem destruction - Overpopulation (drives environmental problems) - Resource depletion - Ozone depletion - Loss of biodiversity • “Wicked” environmental problems: one that is not easily solved. Solving involves significant trade offs. • Principle of Environmental unity - Every action has more than one effect - Everything effects everything • Framework of Environmental Science 1. Human Population Growth 2. Increased Urbanization 3. Sustainability 4. People and Nature 5. Global Perspective 6. Science and Values • Human Population Growth - John Eli Miller (head of largest family in the US) - Exponential Population Growth: constant, unlimited growth that multiplies Ø Because of a decrease in the death rate and birth rate remaining consistent, there is an increase in population. Ø 7.3 billion people on Earth - Carrying capacity: number of individuals in a population the environment can support with NO net increase/decrease and without a disastrous depletion of resources. Ø What is the carrying capacity of earth? 2.5 billion à 40 billion ** BUT it actually depends on the quality life we are willing to accept. - Midway point: optimal yield à growth rate highest Ø 1918-1919: Spanish Influenza Ø By 2001: AIDS killed 20 million people 1. China 1.38 billion 2. India 3. USA - Overpopulation strains our resources - Creates more pollution - Influences quality of life - ^ these are why population growth is a big deal • Urbanization of Our World - Cities: urban environment - Megacities: city that contains a minimum of 10 million people - Urban Sprawl: haphazard outward growth of a city. Ø Atlanta: population grows by 30% every year - Heat Island Effect: when vegetation is removed and replaced with roads and buildings. Ø Building materials act as solar collectors, generating tons of heat. • Sustainability (resource) - Meeting the needs of the present without compromising the ability of future generations to meet their own needs. - Resource: don’t use resource fast their resource can replace itself. - Economics (sustainability development): tries to balance needs of humans with the health of environment. - Ecology, Economy, Equity - Protect environment, make a profit, fairness - Is Chattanooga sustainable? • People and Nature - We are a part of nature and we benefit from nature - Principle of Environmental Unity: everything is interconnected. - We affect nature and change the environment by living in it. • A Global Perspective - Requires solution in slope - Montreal Protocol: Phasing out CFCs - Earths climate not stable - Human influence: contributing to climate change, rate of change is happening too fast. • Science and Values (most important theme) - Science without ethics is blind, ethics without science is empty. - Ethics: study of what’s right and wrong and the reasons why we do what we do. Ø Without ethics, science is dangerous for the environment. Ø Just because you can, doesn’t mean you should. - There must be an ethical vision to guide environmental policy. - When confronted with environmental problem, science is used to tell us our options, but it wont tell us which option to implement. (that’s a question of values) - Values: we have to choose, and when we choose values are implemented • Maitri Visetak and Shrimp Farming case study


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