The next time you are putting a slice of tomato on your sandwich, ask yourself where it came from. Not which area of the country, but which seed stock. One of the often overlooked aspects of food insecurity amid climate uncertainty is the push by big agricultural interests to get us to buy their seeds and their seeds only. Our guest this week on Sea Change Radio, Gary Nabhan, has taken the fight to the corporate seed merchants through the local food movement and seed saving community. The Director of the Center for Regional Food Studies at the University of Arizona, Nabhan believes that a healthy food system is a biodiverse food system. We discuss community-based seed banks, look at the role that Big Ag will continue to play in our food system, and examine how climate change and a lack of biodiverse seed stocks affect people in war zones.