Environmental Progress Report 
The U.S. oil and natural gas industry has invested more than $160 billion since 1990 toward improving the environmental performance of its products, facilities and operations — $11.3 billion in 2006 alone. The American Petroleum Institute highlights some of the results of this investment on its website.

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Vehicles and Air Quality – Americans have a long-standing love affair with automobile. This online quiz focuses in on the latest trends in vehicle use and air quality, with some surprising results.
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