"Most Toxic American Cities"

A Yahoo! front page link: http://realestate.yahoo.com/promo/americas-most-toxic-cities-2011.html
This is pretty cool. It ranks the US cities based on air quality, TRI emissions, superfund sites, and water quality issues. The exact methodology is confusing: Salt Lake City is ranked below St. Louis despite having significantly more ozone action days and TRI emissions. And the full rankings, as well as any kind of numerical index are missing. But its still cobbles together several different measures of environmental quality - air, water, and land - which is not something I had seen before
The top ten, if you don't want to read the story:
1. Philadelphia
2. Bakersfield
3. Fresno
4. New York
5. Baton Rouge
6. LA
7. Houston
8. St. Louis
9. Salt Lake City
10. Riverside
Note that the California cities are there for air quality; Houston, St. Louis, and Baton Rouge are there for the oil industry; Salt Lake is there because of the mining industry, (and also salty water); and NY and Philadelphia are there because the East Coast is a dirty, polluted place.