No scientific story illustrates the power of luck coupled with ingenuity quite like the tale of the discovery of penicillin. The scientist credited with the invention of this groundbreaking drug, Alexander Fleming, was born on August 6, 1881 in Ayrshire, Scotland. A bright student, Fleming worked in a shipping office for several years before returning to school to pursue a degree in medicine. He earned his MD, with honors, from St. Mary’s Medical School in London in 1908. He then worked for Almroth Wright's research team there, where he developed a strong interest in bacteriology.