A discussion between Up Top Acres CEO Kristof Grina and Kevin Sofen about the evolution of roof top farming. Up Top Acres is reimagining what a farm looks like. We grow food on roofs - converting underutilized spaces into productive farmland and environmental safeguards. We create spaces for communities to interact with and learn about food, in order to establish agriculture as a fixture of city life.http://uptopacres.com/index.html