What career opportunities are available after PhD in Engineering and Public Policy (program at CMU)?

I really have to disagree with this advice. Engineering is one of the few fields where PhDs have relatively plenty opportunities, including in academia, industry, and national labs. I ended up in academia, but literally none of the remainder of the PhD cohort from my graduate school within a year or two before or after me have done so. I realize that’s a fairly small sample size, but it’s still pretty telling, in my opinion.

This is absolutely the right advice to give here. I couldn’t agree more. If a student’s ultimate career goal doesn’t effectively require a PhD, then there is no point to earning one (and doing so is more likely to be detrimental than beneficial).

I just want to quote this for emphasis. This job will eat anyone who is half-assing it alive.

So, back to @muchstress

Erase this criteria from your mind when it comes to choosing whether to do a PhD and picking such a program. You need a much clearer idea of what interests you than “sustainability related fields” when making these decisions. You don’t need to have a perfect grasp of the research you want to do, but you at least ought to have no problem answering these two questions:
[ul]
[]What sort of research field do I wish to study for the next 6(ish) years?
[
]Do I want a career in research (whether it’s academic, industrial, or government)?
[/ul]
If you can’t answer something like “fluids” or “materials” for the first question (in the case of mechanical engineering) and you can’t answer “yes” to the second, then you are not ready to do a PhD.

If and only if you have those answers readily available, then you should start looking at programs. The best way to do that, in my opinion, is to ask professors at your current school in similar research fields for advice and/or browse the relevant journals and look for research groups publishing on topics that interest you. Saying you want to be involved in “sustainability related fields” is way too broad for this kind of decision.