In this episode, Dr. Kelly Nichols (University of California–Davis) and Dr. Susanna Räisänen (Aarhus University) join the Real Science Exchange to discuss “Exploring Flexibilities in Protein Nutrition for a Sustainable Dairy Industry.” The conversation dives into nitrogen efficiency, metabolic flexibility, rumen function, amino acid metabolism, and how protein nutrition strategies can support both production and environmental sustainability. The panel explores how moving beyond traditional limiting amino acid theory may unlock new opportunities for precision feeding and improved nitrogen utilization.