Traditional and new cancer therapies often become stymied due to tumor resistance, but why resistance arises and how to avoid it remain important questions in the cancer research field. To uncover the ways tumors form, adapt, and ultimately resist treatment, scientists investigate how genetic mutations arise and drive cancer cell evolution. In this month’s episode, Deanna MacNeil from The Scientist spoke with Bishoy Faltas, an associate professor of medicine, and cell and developmental biology, and chief research officer of the Englander Institute for Precision Medicine at Weill Cornell, to explore bladder cancer evolution and treatment resistance. The Scientist Speaks is a podcast produced by The Scientist’s Creative Services Team. Our podcast is by scientists and for scientists. We bring you the stories behind news-worthy molecular biology research.