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APES Ch. 1, part 2


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APES Ch. 1, part 2

  1. 1. Pollution, Causes of Environmental Problems, and Principles of Sustainability Ch. 1, part 2 Living in the Environment Miller and Spoolman, 16th ed.
  2. 2. Pollution Main idea: preventing pollution is more effective and less costly than cleaning up pollution
  3. 3. 2 main types of pollution 1. Point source - comes from a single, identifiable source
  4. 4. 2 main types of pollution 2. Nonpoint source - dispersed, difficult to identify
  5. 5. 2 main types of pollutants 1. Biodegradable - can be broken down by natural processes E.g. sewage, paper, green waste
  6. 6. 2 main types of pollutants 2. Nondegradable - natural processes cannot break them down e.g. toxins like lead, mercury, arsenic
  7. 7. Effects of pollutants 1. Degrades life support systems for humans and other species 2. Damages wildlife, health, property 3. Create nuisances like noise, unpleasant smells and sights
  8. 8. Quick Think Have you ever been somewhere and seen obvious pollution? Where? How did it make you feel?
  9. 9. Clean-up vs. Prevention Do we ask: How can we clean up this pollution? Or do we ask: How can we prevent pollution from occurring?
  10. 10. Clean up Aka output pollution control It is only a temporary solution Pollution keeps happening It often just shifts the problem Trash is burned - land clean but air is now dirty Trash is buried - water and soil pollution High levels of pollutants nearly impossible to clean up cheaply
  11. 11. Why do we have environmental problems? 5 major reasons: Population growth Wasteful and unsustainable resource use Poverty Failure to include the environmental cost of products in their prices Lack of knowledge about how the environment works
  12. 12. Population growth The human population is growing exponentially More people means more resource use and pollution
  13. 13. Agree or disagree? a) Stabilizing population size is not desirable because it would halt economic growth b) We will not run out of resources because our technology and ingenuity will help us find substitutes
  14. 14. Poverty Definition - when people are unable to meet their basic needs for food, water, shelter, health, and education
  15. 15. How poverty hurts the environment Focus is daily survival Desperate for resources, these people will degrade or deplete whatever is available Worrying about the long term survival of an ecosystem is a luxury they cannot afford
  16. 16. Slum city in Mexico
  17. 17. Poverty hurts children Often trapped in an endless loop of poverty Parents have many kids to help with Gathering food, water Tending crops, livestock Caring for them in their old age
  18. 18. People in Poverty suffer the affects of pollution more acutely Malnutrition - lack of protein and nutrients in diet More likely to die from things like diarrhea and measles Over 12,000 children under 5 die from diarrhea every day
  19. 19. Food for thought This is equivalent to 60 fully loaded 200- passenger airliners crashing and killing everyone aboard, every day Why haven’t you heard of this before?
  20. 20. How do you feel? When you read that over 12,000 children die from diarrhea every day, do you: a) Doubt that it is true b) Not want to think about it c) Feel hopeless d) Feel sad e) Feel guilty f) Want to do something about it?
  21. 21. People in poverty suffer the affects of pollution more acutely No sanitation systems for 38% of the world’s population Water for drinking, bathing, cooking contaminated with human waste
  22. 22. Life-Straw - personal filtration system could save millions Poor Man’s Gatorade Palm full of sugar and a pinch of salt We CAN solve these problems - if we WANT to
  23. 23. Affluence hurts the environment, too High levels of consumption Wasteful use of resources Fueled by advertising making us think having more stuff will make us happy It takes 27 trailers of resources per year for each American
  24. 24. On the other hand… Affluence means having the luxury of caring about the environment
  25. 25. What is your environmental worldview In your notebook, set aside a page titled: My environmental worldview - August, 2010 We will revisit it in May
  26. 26. People differ in their viewpoints about the environment Environmental worldview - your values and what you think your role in the world should be Environmental ethics - our beliefs about what is right and wrong about how we treat the environment
  27. 27. Planetary Management Worldview Man is separate from nature Nature exists to meet our needs and wants We can use our ingenuity and technology to continue living the way we do now
  28. 28. Stewardship worldview Can and should manage planet for our benefit Have a responsibility to care for it Encourage environmentally friendly growth and development
  29. 29. Environmental Wisdom Worldview Man is a part of, and dependent on, nature Nature exists for all life, not just for us Encourages green business Learn how life sustains itself and work within nature to sustain ourselves
  30. 30. Agree or disagree? a) Humans are superior to other forms of life b) Humans are in charge of the earth c) All economic growth is good d) The value of other forms of life depends on whether they are useful to us e) Because all forms of life eventually go extinct, we should not worry if our activities cause premature extinction f) All forms of life have an inherent right to exist g) Nature has an almost unlimited store of resources for human use h) Technology will help solve our environmental problems i) I do not believe that I “owe” anything to future generations j) I do not believe I have an “obligation” to protect other forms of life
  31. 31. What are the basic beliefs of your environmental worldview? Record your ideas in your notebook.
  32. 32. 4 scientific principles of sustainability Life on earth has survived and adapted to change for millions of years We can study how and learn how to sustain ourselves
  33. 33. Lessons from nature 1. Rely on solar energy 2. Biodiversity sustains life 3. Population control preserves resources 4. Nutrient cycling - no waste in nature
  34. 34. Quick Write: Choose 1 word to describe what we have been studying so far then Write a short paragraph explaining why you chose that word