22. Environmental engineers
Projected increase in 2018: 30.6 percent
Number employed in 2008: 54,000
Median pay in 2008:$74,020
Education/training: A bachelor’s degree in engineering is required for almost all entry-level engineering jobs. College graduates with a degree in a natural science or mathematics occasionally may qualify for some engineering jobs.
Job outlook:A shift in emphasis toward preventing problems rather than controlling those which already exist, as well as increasing public health concerns resulting from population growth, also are expected to spur demand for environmental engineers.