Josh Harkinson is a staff reporter at Mother Jones. For more of his stories, click here. Email him with tips at jharkinson (at) motherjones (dot) com. To follow him on Twitter, click here. Get Josh Harkinson's RSS feed.
Grown under the radar of legal authorities, even "medical" cannabis can be covered in toxic mold or coated in commercial-grade synthetic fertilizers and insecticides.
Think the days of knowing where your food and clothes come from are gone for good? What began as ties between one café and local farmers could grow into a new model for the global economy.