Pollution

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Pollution Environmental Problems
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Pollution

• What exactly is pollution?

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What is Pollution?

• Pollution any addition to air, water, soil, or
  food that threatens the health or survival of
  humans or other organisms

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Pollution

• Point Source
• Single
• Identifiable source
• Examples
• Smokestacks
• Drainpipes
• Exhaust pipes

• Non-Point Source
• Dispersed
• Difficult to identify
• Examples
• Runoff
• Sprayed pesticides
• Construction sediment

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What do you think?

• Is it cheaper to
• prevent pollution from being released in the
  first place?
• OR
• clean it up once it has already been released?

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Pollution Prevention

• Reduce or eliminate production of pollutants
• Also called Input Pollution Control

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Pollution Prevention

• Typically cheaper and is more effective than
  clean-up
• As resources become more expensive, businesses
  find that it is more economical to reduce their
  pollution

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Pollution Clean-Up

• Cleaning up or diluting pollutants after theyve
  been produced
• Also called Output Pollution Control

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Pollution Clean-Up

• 3 problems
• Only a temporary bandage, not a fix
• Removes pollutants from one part of the
  environment only to put them in another part
• Too costly to reduce pollutants to acceptable
  levels

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Environmental Impact

• What factors affect the size of a countrys
  environmental impact?
• (P) population
• (A) affluence
• (T) technology

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Changes in Human Society

• Agricultural Revolution (10,000 12,000 years
  ago)
• Shift from nomadic groups to settled communities
• Domestication of animals
• Cultivation of plants
• Little impact on environment
• Only altered small areas of land
• Low population size and density
• Enough land so they could let fields restore
  themselves after being used

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Changes in Human Society

• Industrial Revolution (1700s 1800s)
• Increase in production, trade, and distribution
  of material goods
• Renewable ? Nonrenewable resources
• Small scale production ? Large scale production
• Development of modern cities
• Fewer farmers, more city-dwellers
• Concentrated pollution
• Commercial agriculture

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Changes in Human Society

• Information/Globalization Revolution (gt1950s)
• Improvements in transmitting information (phone,
  radio, TV, computer, internet, etc.)
• Rapid access to information
• Rapid increase in information
• Globalized economy