Kellogg funded this on-line course about how to frame the work of promoting local food systems. It's a commitment to sit through, but there are some key findings in the research that can inform how we talk/write/communicate about the benefits of local systems and the consequences of the mega systems that dominate our food sources.  Check it out at---http://www.hollyworks.com/frameworks/course/

The real arsenal of democracy is a fertile soil, the fresh produce of which is the birthright of nations.
--Sir Albert Howard