Sustainability and Social Entrepreneurship is one area offered at Case Western Reserve Weatherhead school of management.
Personally, I'd take their Managing by Designing program. Its integrating right brain design thinking with left brain quant and logic.
Operations research.
Management.
Finance.
Accounting.
International Business.
Marketing.
Marketing Communications.
WHat would you like to do ?
milo
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People say between two opposed opinions the truth lies in the middle. Not at all! Between them lies the problem, what is unseeable,eternally active life, contemplated in repose. Goethe
I assume you work in an English speaking environment. If so, you should be working toward mastering the English language before anything else. All the degrees won't help you much if you cannot communicate well.