I have written a thesis on (social) innovation systems using an engineer's toolset. It has policy implications, but also (potentially) fills a lot of gaps left between sociology and economics.
I'd think those interested in freakonomics and 'the origin of wealth' would like this. Basically big thinkers that like to have all the answers :)
Can you recommend a way I should go about searching for an agent to get published?
Darling, I'll break this to you gently: don't go searching for an agent. I can't think of a single one who would take that on, because I can't think of a publisher who would take that on. A thesis does not make a popular non-fiction science/engineering text without a lot of work. Do the work, road test it on a blog, then get back to me.