I am an architect. I practice as an architect for two years only to realize that in order to make a difference at grassroots level I would probably have to follow where the money is. I. Hmm, I did my master's in sustainable design and then a PhD in building performance in diagnostics from Carnegie Mellon university. https://www.solvecast.com/articles/detail/29208-how-to-find-opportunities-to-make-green-building-design-possible-and-affordable