The podcast explores the life of Paul Alexander, one of the last polio survivors still using an iron lung, a mechanical ventilator that helped patients breathe during the polio epidemic of the 20th century. It delves into the origins and benefits of the iron lung, as well as the new alternatives that have emerged in recent decades, such as positive pressure ventilators and diaphragm pacing systems. The article highlights Alexander's resilience and determination in living a full life despite his physical limitations, and discusses the ongoing advancements in medical technology that aim to improve the quality of life for people with respiratory paralysis.