What interests you in the area of environmental? I did my undergrad in engineering and worked in the environmental sector before as an environmental engineering. Mostly dealing with wastewater and clean water, from public policy, engineering design and project management. Accross dams, reservoirs and oceans. I deal with consultants and policy makers. The best professionals tend to come from civil/chemical engineering background with emphasis in environmental. And then they either get their top MBA, MPA or JD. Side benefits from having engineering undergrad are people take you more seriously and your starting salary is way higher than those with other undergrads+MPA. The downside is engineering salary tends to plateau after 10 years, but then again, all other jobs too, unless you're in a revenue generating role (front office banking or consulting).