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.

Today's victory means that thousands of Americans will not have their lives cut short because of the pollution that would have blown through this huge loophole.

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.

We've seen action taken, and more needs to be done. We will insist upon it.

It's something to cherish and it's something to celebrate, but it's also something to protect.