In this episode of Talk Nerdy, Cara is joined by historian Dr. Lisa T. Sarasohn to talk about her new book, "Getting Under Our Skin: The Cultural and Social History of Vermin." They discuss how our view of lice, fleas, bedbugs, and rats evolved with the advent of modern science, as well as the tendency to dehumanize, ostracize, and perpetrate violence against those deemed to be "other."