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11. Hazards of Ozone in the Troposphere

   

2005

21 June 2005. Environment: Linking High Ozone to Increased Death Rates. By ERIC NAGOURNEY, NY Times. Three teams of researchers conducting separate studies have concluded that high ozone pollution is linked to higher death rates. The studies, which appear in the July issue of Epidemiology, "point to the urgent need to reduce public exposures to ambient ozone by all possible means," an accompanying editorial argues...Two of the new studies came to a very similar finding. For every 10 parts per billion the daily ozone level goes up, they said, the death rate over the next three days goes up about 0.85 percent...One study reported finding "strong evidence of a short-term association between ozone and mortality, with larger effects for cardiovascular and respiratory mortality."

16 April 2005. NY Times. Change to the Clean Air Act Is Built Into New Energy Bill. By MICHAEL JANOFSKY. WASHINGTON, April 15 - Deep in the energy bill that was approved by a House committee this week, under a section titled "Miscellaneous," is a brief provision that could have major consequences for communities struggling to clean up their dirty air. If it becomes law, it would make one of the most significant changes to the Clean Air Act in 15 years, allowing communities whose air pollution comes from hundreds of miles away to delay meeting national air quality standards until their offending neighbors clean up their own air. The provision could especially affect states like New York, which has some of the nation's dirtiest air, and other Northeastern states that have always had difficulty meeting federal standards for ozone, a leading cause of smog, because much of any state's pollution originates in states to the south and west. Under the new provision, the "downwind" states would not be required to meet clean air standards until the "upwind" states that were contributing to the problem had done so. Currently, states can get more time but only if they agree to added cleanup measures....

 

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2003

16 October 2003. Down and Dirty: Airborne Ozone Can Alter Forest Soil. The industrial pollutant ozone, long known to be harmful to many kinds of plants, can also affect the very earth in which they grow. Researchers at Michigan Technological University and the North Central Research Station of the USDA Forest Service have discovered that ozone can reduce soil carbon formation--a measure of the amount of organic matter being added to the soil. Their findings are published in the Oct. 16 issue of the journal Nature.

CYCLES OF THE EARTH AND ATMOSPHERE: A WEB SITE FOR TEACHERS The information and classroom activities found on this Web site were taken from the print versions of the University Corporation for Atmospheric Research (UCAR) Project LEARN's teaching modules, "Cycles of the Earth and Atmosphere: Their Impact on Climate Change and Ozone in our Atmosphere." The on-line module consists of a general overview and seven topical sections each with supporting, field-tested classroom activities designed for middle school grades 6 through 9.

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