Environmental Problems, Their Causes, and Sustainability.
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Transcript of Environmental Problems, Their Causes, and Sustainability.
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Environmental Problems, Their Causes,
and Sustainability
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Environmental Science: Study of Connections in Nature
“The environment is everything that isn’t me.“
Interdisciplinary science connecting information and ideas fromNatural sciences: ecology, biology, geology,
chemistry…Social sciences: geography, politics, economicsHumanities: ethics, philosophy
Environmental biology: emphasizing the living aspects of environmental science
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Study of Connections in NatureHow nature works
How the environment affects us
How we affect the environment
How to deal with environmental problems
How to live more sustainably
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Principles of Sustainability
Nature has sustained itself for billions of years by using solar energy, biodiversity, and nutrient cycling.
Our lives and economies depend on these same principles.
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From Simple Cell to Homo Sapiens
Fig. 1-2, p. 7
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What is sustainability?Environmental Protection Agency
Sustainability creates and maintains the conditions under which humans and nature can exist in productive harmony, that permit fulfilling the social, economic and other requirements of present and future generations.
North Carolina State UniversityThe concept of sustainability centers on a balance of society, economy and environment for current and future health. Responsible resource management in all three areas ensures that future generations will have the resources they need to survive and thrive.
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Nature’s Survival Strategies Follow Three Principles of Sustainability
1. Reliance on solar energy The sun provides warmth and fuels
photosynthesis
2. Biodiversity Astounding variety and adaptability of natural
systems and species
3. Chemical cycling (nutrient cycling) Circulation of chemicals from the environment to
organisms and then back to the environment
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Three Principles of Sustainability
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Natural CapitalNatural capital includes
Natural resources—useful materials and energy in nature
Natural services—important nature processes such as renewal of air, water, and soil
Humans degrade natural capital
Scientific solutions needed for sustaining natural capital
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Natural Capital = Natural Resources + Natural Services
Fig. 1-4, p. 9
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Natural Capital Degradation
Fig. 1-6, p. 10
What is the problem?What is the solution?What tools do we need?
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Our Ecological Footprints Affect the Earth
As our ecological footprints grow, we are depleting and degrading more of the earth’s natural capital.
Environmental degradation (natural capital degradation) is the wasting, depleting, and degrading of the earth’s natural capital
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Fig. 1-9, p. 13