In this episode of Talk Nerdy, Cara chats with Eugenia Bone, author of the new book "Microbia: A Journey into the Unseen World Around You." They discuss Eugenia's journey back to school to learn about the microbiome, the vast collection of all the microbes (and their genes) living inside you. They also talk about her fascinating career as a nature and food writer. Follow Eugenia: @eugeniabone.