Environmental health ch 17
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Environmental Health Ch 17 - PowerPoint PPT Presentation

Environmental Health Ch 17. When the sun rises, I go to work. When the sun goes down, I take my rest. I dig the well from which I drink, I farm the soil that yields my food. I share creation, Kings can do no more. -- Ancient Chinese Proverb, 2500 B.C. Environment.

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Environmental Health Ch 17

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Environmental Health Ch 17

When the sun rises, I go to work.When the sun goes down, I take my rest.I dig the well from which I drink, I farm the soil that yields my food.I share creation, Kings can do no more.

-- Ancient Chinese Proverb, 2500 B.C.


  • The multitude of dynamic conditions that are external to the person

Environmental Health

  • The collective interactions of humans with the environment and the short-term and long-term health consequences of those interactions

"Man did not weave the web of life - he is merely a strand in it.Whatever he does to the web, he does to himself."

Chief Seattle (1854 treaty oration)

"In our every deliberation, we must consider the impact of our decisions on the next seven generations."

From The Great Law of The Iroquois Confederacy

What are some classic environmental concerns?

Water QualityAir QualityWaste DisposalPopulationGreenhouse Effect and Global WarmingChemical PollutionRadiationIndoor Air Pollution

An Inconvenient Truth: Al Gore

Clean Water

  • Water Contamination and Treatment.

    • Fluoridation

    • Water-treatment plants

  • Water shortages

    Only 35% of the world’s population has an adequate water supply

Waste Disposal

  • Sewage

    • Septic system

    • Heavy metal

    • Polychlorinated biphenyls (PCBs)

  • Solid waste

    • Garbage

    • Sanitary landfill

Waste Disposal

  • What You Can Do to Reduce Garbage

    • Products with least amount of packaging

    • Products made of recycled paper or recyclable products

    • Avoid using foam or paper cups

    • Store food in glass jars and reusable plastic containers

    • Recycle newspapers, glass, cans, paper, and any other recyclables

    • Start a compost pile

    • Stop junk mail

Population Growth

  • World’s population currently estimated at 6.1 billion

    • Increasing by 78 million per year

    • To exceed 9 billion by 2050

  • How Many People Can the World Hold?

    • Food

    • Available land and water

    • Energy

    • Minimum acceptable standard of living

World Population

  • Factors That Contribute to Population Growth

    • High fertility rates

    • Lack of family planning resources

    • Lower death rates

p. 395 Text

An estimated ______% of the U.S. population live in communities that fail to meet 1 or more federal air quality standards.


  • Air pollution

    Key Terms:

    • EPA- Environmental Protection Agency

    • AQI- Air Quality Index

    • Smog

    • Thermal Inversion

    • Acid Rain

P. 423 Text Greenhouse Effect

Since recordkeeping began in 1880, temperatures have steadily increasedCarbon Dioxide levels in the atmosphere have also increaseddramatically since 1960Refer to P. 424 Figure 17-4 in Text

p. 396 Text Greenhouse Effect

Potential Effects of The Greenhouse Effect and Global Warming

Climate Changes:

  • Increases in Temperature

  • Decrease in Precipitations

  • Rise in Sea Level

These Climatic Changes Impact:

  • Health

  • Agriculture

  • Forest

  • Water Resources

  • Coastal Areas

  • Species and Natural Areas

  • Weather Patterns


  • Forms:

    Ultra-violet Rays






    Nuclear weapons/ energy


Noise Pollution

  • Decibel: Measure of intensity of a sound wave

  • Avoiding Noise Pollution:

    Ear Protectors around machinery

    Headset at 4 (out of 10)

    Avoid repeated exposure to sounds over 80 decibels

Avoid exposure to painfully loud sounds 80 + decibels

Healing the Environment

Center for Environmental Research and Training(Univ. of Ca. at San Diego)

  • Carbon Management Group- Works with companies to help reduce e greenhouse gases.

  • Future Forests (FF)

    Neutralize Co2 by reforestation and use of “clean” energy

    Provides funding for developing countries to use solar energy instead of fossil fuels

A family of four creates an estimated 15 tons of carbon dioxide emissions per year, (based on a calculation of its daily household energy consumption, the running of two cars and a family holiday in Florida).

To offset the greenhouse gases created, 26 trees need to be planted

"going carbon neutral",

  • is intended to reduce global warming

  • encourages film-makers to plant trees to "neutralize" the greenhouse gases created in the production of their art.

The Rolling Stones paid for a forest on the Isle ofSkye to offset the carbon dioxide emitted during their nine-day British tour.

It was estimated that to balance the environmental effect of the tour the rock band had to plant 2,800 trees.

About 90 per cent of the emissions were created by the fans travelling to see the band, with one tree planted for every 57 fans.

"I'd put my money on the sun and solar energy. What a source of power!

I hope we don't have to wait till oil and coal run out before we tackle that."

- Thomas Edison

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