During this River to River conversation, Med Farm's General Manager Lucas Nelson, Iowa's only medical marijuana manufacture, talks to host Ben Kieffer. Sally Gaer, a mother and advocate, and Captain Mike McKelvey, who is on the state's cannabidiol advisory board, also join the conversation. 

Listen here: http://www.iowapublicradio.org/post/doctors-still-hesitant-certify-iowa-...