In 2022, Susan Wojcicki was on top of the world—CEO of YouTube, parent to five kids, and running a few miles a day—when she received a shocking diagnosis: metastatic lung cancer. She soon resigned from YouTube and dedicated herself to fighting the disease and looking for answers. Why does the leading cause of cancer deaths receive less funding than some less lethal cancers? How could her lung cancer have progressed so far undetected? And how did Susan get lung cancer, when she had never smoked? This episode is dedicated to her.