 On the next Radiolab. I wanted to conquer the diseases of children. The story of a man who completely altered the course of human health. His work is estimated to have saved about 8 million lives a year. One single scientist responsible for over 40 vaccines. Chicken pox. Adenovirus. Measles. Mom's rubella. Japanese encephalitis. Who you'd think would be a household name. Among a group of pediatricians who give his vaccines. No one heard of him. No one. That's on the next Radiolab. Beginning this morning at 10.