15PowerPoint® Lecture Outlines prepared by Dr. Lana Zinger, QCC CUNY

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings.

Environmental Health: Thinking Globally, Acting Locally

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings.

Overpopulation

Facts

• In 2000, population = 6.1 billion people

• Prediction for 2050 = 9.4 billion people

• Unequal distribution

• India’s population largest increase

• Urban versus rural

• Concept of zero population growth

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings. Figure 15.1

World Population Growth, 1950-2050 (Projected)

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings. Figure 15.2

World Liquids Consumption by Region and Country Group, 2004 and 2030

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings.

Air Pollution

Clean Air Act

• 1970

• Amendments in 1977 and 1990

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Air Pollution

Sources of air pollution

• Sulfur dioxide

• Particulates

• Carbon monoxide

• Nitrogen dioxide

• Ozone

• Lead

• Carbon dioxide

• Hydrocarbons

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Air Pollution

Photochemical smog

• Temperature inversion

Acid deposition and acid rain

• Wet deposition

• Dry deposition

• Cloud deposition

What is the air quality like where you reside?

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings.

Air Pollution

Indoor air pollution

• Environmental tobacco smoke

• Home heating

• Asbestos

• Formaldehyde

• Radon

• Mold

• Household chemicals

• Sick building syndrome

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Air Pollution

Ozone layer depletion

• Chlorofluorocarbons (CFCs)

Global warming

• Greenhouse gases

Reducing air pollution

• Energy

• Transportation

• Industry

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings. Figure 15.3

The Greenhouse Effect

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ABC News: Environmental Health

Discussion Questions

• What amount of plant and animal species extinction do scientists predict by the year 2050, caused by global warming and climate change? By end of the 21st century?

• Do you think world leaders are concerned about the effects of global warming?

• How has the spreading of human habitat in the United States impacted plants and animals?

PlayVideoPlay

Video| Environmental Health

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings.

Water Pollution

Fact

• 75% of the earth is water

Water contamination

• Point source vs. nonpoint source

• Septic systems

• Landfills

• Gasoline and petroleum products

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings. Figure 15.4

Sources of Groundwater Contamination

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Water Pollution

Chemical contaminants

• PCBs

• Dioxins

• Pesticides

• Lead

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings.

Land Pollution

Solid waste

• Per person average = 4 pounds/day

• Municipal solid waste

Hazardous waste

• Love Canal, New York

• Dump sites

• Superfund

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings. Figure 15.5

Waste Generation and Recycling Rates

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings.

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings.

Noise Pollution

Source of distress

• Sleep patterns

• Headaches

• Tension

• Blood pressure

Sources

• Stereos

• Neighbors

• Trains

• Airports

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings. Figure 15.6

Noise Levels of Various Sounds

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Radiation

Nonionizing radiation

• Radio waves

• TV signals

• Microwaves

• Infrared waves

• Visible light

EMFs

• Electric and magnetic fields

• Findings are weak

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Radiation

Ionizing radiation

• Alpha particles

• Beta particles

• Gamma rays and X-rays

• 50% natural sources

Nuclear power plants

• 1% of total radiation

• Disposal is dangerous

• Dangers of meltdown