Terry Gross interviews comedian Sarah Silverman about her new Netflix comedy special, "PostMortem," which delves into the recent deaths of her father and stepmother. Silverman discusses how she incorporated material from her father's eulogy into her stand-up, the experience of witnessing her stepmother's battle with pancreatic cancer and her father's subsequent decline, and how these experiences have shaped her views on death and coping with grief. She also reflects on her early career in comedy, the sexism she faced, and the evolution of her comedic style.