Well it worked with environmental studies. It was once a dead end career but the EPA has made is an essential element to conducting all manner of business.
Complying with endless regulations does little for the environment, slows production, chokes innovation and increases costs but hey its a great jobs program for greeny graduates.
A friend of mine, in HR, was sent a book of resumes of graduate students from a major state university.
Nearly every one of those kids was majoring with a concentration in some green/renewables/sustainability garganzola.