Mr. Lax talked about his book, The Mold in Dr. Florey’s Coat: The Story of the Penicillin Miracle, published by Henry Holt. The book describes the discovery and development of penicillin, the first antibiotic. Penicillin changed the world by curing pneumonia, scarlet fever, syphilis, and other diseases. The author details the story behind the discovery of penicillin in 1928 and explains why it took four more years to develop the first antibiotic. Mr. Lax further explains the controversy behind who took the credit for the medical breakthrough.