Time To Clean Up Their Acts

The American Lung Association has compiled the list of dirty cities, said the 20 million residents in these areas are at increased risk of asthma and chronic bronchitis. The 10 dirtiest cities are:
1. Bakersfield, Calif.
2. Los Angeles, Calif.
3. Fresno, Calif.
4. Visalia, Calif.
5. Hanford, Calif.
6. Phoenix, Ariz.
7. Birmingham, Ala.
8. Modesto, Calif.
9. Sacramento, Calif.
10. Pittsburgh, Penn.
Seven of these cities are in California, where voters rejected Prop 23 earlier this month, which would have temporarily suspended emission-reduction requirements.

Source: Forbes, Christopher Helman