Dr Elena Bonfante and Dr Bill Prokop of Dairy Innovations Italia and Dairy Innovations, in Italy and USA, take us on tours of three Italian dairies in northern Italy. Each farm has a unique approach to sustainability; one has a bio-digester, one is a blend of parlor/robotic milking system and makes milk for Grana Padano cheese production, and the third produces milk for Parmigiano-Reggiano cheese production.