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Air Pollultion

•Air Pollution Facts:
  • –Over half of the United States population lives in areas which have unhealthy levels of either ozone or particle pollution.
  • –It’s estimated that 81 million Americans live in areas with unhealthful short-term levels of particle pollution and 66 million live in areas with chronically unhealthful levels of particle pollution.
  • –Air pollution found in large and midsize U.S. cities increases the risk of premature death from lung cancer and heart disease.
  • –Air pollution contributes to lung disease, which claims close to 341,500 lives in America every year and is the third-leading cause of death in the United States.
  • –The Environmental Protection Agency ranks poor indoor air quality among the top five environmental risks to public health. Interestingly, five out of 10 Americans are not aware of this fact.
  • –Levels of air pollution inside the home can be two to five times higher (and occasionally 100 times higher) than outdoor levels. (Source: American Lung Association)
  • •"Primary" standards are designed to establish limits to protect public health, including the health of "sensitive" populations such as asthmatics, children, and the elderly.
    • "Secondary" standards set limits to protect public welfare, including protection against decreased visibility and damage to animals, crops, vegetation, and buildings.

Visibility Reduction Due to Light Scattering

 

Different Source of Aerosols

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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           A Clear Day in Riverside, CA                   

Same Building With Air Pollution

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 Last Updated 7/6/2006