Hence there is an urgent need to find the optimum economic level of pollution reduction.

The pollution reductions required by the rules will yield up to $30 in health benefits for every dollar spent to meet the standards.

Environmental engineers can be involved with pollution reduction, green engineering, and industrial ecology.

Most important, the proposals differ significantly on the timing of pollution reductions.

Q. Why is that better than just ordering pollution reductions?

The result is equal pollution reduction for $2,400, for a savings of $300.

The auto industry has a history of saying that further pollution reductions are impossible, only to find ways to comply with new regulations.

Internal environmental agency analysis shows that "saving" would mean actual pollution reduction of only about 50 percent by 2018.

Others, including the acid rain program, require substantial pollution reductions by power plants.

As a result, it made sense for Duke to leave big pollution reductions to other generators.