Median pay: $162,000
Top pay: $265,000
10-year job growth: 17.0%
Total jobs*: 30,200
What they do all day? Petroleum engineers have become hot commodities as new oil and natural gas production sites open up across the U.S. They play a pivotal role in the drilling process, making sure everything runs smoothly and no major mishaps occur. Their reward: The job is one of the highest-paying on our list. --J.A.