Episode 93: Milk has been a lot of things through the years, but it was often poisonous, spoiled or both. Learn about how far we've come in making milk safe, and who may or may not have helped us get to the root cause of what was making milk dangerous. From Dr. Anna Bixby and the mystery of Milk Sickness to Gail Borden who invented condensed milk, it's been a long road to your grocery store.