During World War II, the US Army launched a seemingly routine experiment to find the ideal way to screen soldiers for tuberculosis. Jacob Yerushalmy, the statistician in charge of this project, would succeed at this task -- and end up fundamentally changing our conception of medical diagnosis in the process. This episode features Dr. Shani Herzig, as well as a new segment featuring Dr. Umme H. Faisal on Yellapragada Subbarow and his discovery of ATP.