• Indoor Air Quality - US EPA - Most people are aware that outdoor air pollution can damage their health,
  but may not know that indoor air pollution can also have significant effects. Over the past several decades,
  our exposure to indoor air pollution is believed to have increased due to a variety of factors, including the
  construction of more tightly sealed buildings, reduced ventilation rates to save energy, the use of synthetic
  building materials and furnishings, and the use of chemically formulated personal care products, pesticides and household cleaners

• Environmental Expert.com - Environmental Business Information Center

• National Park Service - Nature & Science - Air Resources Division - Learn about the air quality in America's national parks and how the National Park Service is protecting resources affected by air pollution. Use our Nature and Science Air Resources website to explore air quality in your national parks

• National Vehicle and Fuel Emissions Laboratory - EPA's National Vehicle and Fuel Emissions Laboratory is part of the Office of Transportation and Air Quality which is responsible for carrying out laws to control air pollution from motor vehicles, engines, and their fuels. The laboratory's primary responsibilities include: evaluating emission control technology; testing vehicles, engines and fuels; and determining compliance with federal emissions and fuel economy standards

• NOAA's Atmospheric Turbulence and Diffusion Division

• Scorecard - Find environmental information about your community: learn how bad the pollution is, where the toxic chemicals come from, what the health risks are, and what actions you can take

• Clean Air Act

• DieselNet - Diesel Emissions Online - Online information service on diesel exhaust emissions, emission control technologies, emission standards, regulations, measurement, health and environmental effects

• AIRNow - The U.S. EPA, NOAA, NPS, tribal, state, and local agencies developed the AIRNow Web site to provide the public with easy access to national air quality information. The Web site offers daily AQI forecasts as well as real-time AQI conditions for over 300 cities across the US, and provides links to more detailed State and local air quality Web sites

• Fuel Efficiency Automobile Test Data Center - Research warehouse containing millions of remotely collected vehicle emission measurements from all over the world, and their resulting research publications

• State and Territorial Air Pollution Program Administrators and the Association of Local Air Pollution Control Officials

• Water treatment & Air Purification systems - Water treatment and air purification systems for water recycling, water disinfection, odour control, water filtration using environmentally friendly technologies such as ozon generator and uv disinfectants, biofilters and membrane systems

• NRL Monterey Aerosol

• Clean Air Task Force (CATF) - Clean Air Task Force (CATF) is a nonprofit organization dedicated to restoring clean air and healthy environments through scientific research, public education, and legal advocacy

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