Interesting article at the Chronicle of Higher Education on the economic value of a bachelor's degree.
"The economic value of a bachelor’s degree varies by college major. New data from the U.S. Census Bureau show that median earnings run from $29,000 for counseling-psychology majors to $120,000 for petroleum-engineering majors. Even when majors are looked at by groups, such as business or health, there is variation in pay depending on the specific major."
[Original Source: "What’s It Worth? The Economic Value of College Majors" from Georgetown University’s Center on Education and the Workforce]