Diesel exhaust is very dirty, and it's a huge contributor to air pollution in many communities. This will make significant changes in the air quality in a lot of our urban areas.
We have mounting scientific proof that cleaning up the source of air pollution results in cleaner air and less illness and death. A study recently released showed that when particle air pollution declines in a city, the death rates also drop in that city.
We do have a huge problem with air pollution in Ohio and part of the reason is the power plants ... which are old, dirty and burn coal.