One of the reasons I chose to join Grant Farms CSA several years ago is because I took a class on transportation logistics and learned about how food is transported around the world - specifically about the impact of chemically enhancing the produce to make it survive long trips. There was also lots of discussion about Fair Trade practices and how poorly farmers get treated from everything to do with work conditions to how they are unable to compete in trade markets. I started researching solutions for a paper I was writing and came across the idea of Community Supported Agriculture.
The money I spend (my dollar voted) on produce, meat, cheese, eggs, etc. goes directly to my (organic) farmer without the need for excess chemicals, labor, and emissions to transport produce long distances. My farmer does not have to pay big-box companies (such as grocery store chains) fees just to stock produce.