Jack Kloppenburg has been a leading figure in the fight to protect seed-sharing commons over the past forty years. It's a struggle that began in the 1980s as large ag-biotech companies have sought to make seeds privately owned and proprietary using all sorts of legal, technological, and market restrictions. Kloppenburg has been a professor at the University of Wisconsin, Madison since 1985 and a founder of the Open Source Seed Initiative. OSSI leads a movement of farmers, breeders, gardeners, and small seed companies dedicated to building a culture of openly shareable seeds and breeding innovation.