Anna Harris is a postdoctoral researcher in the Technology and Society Studies Department at Maastricht University. Anna studies practitioners, skills, technologies and places of medical activity, largely using ethnographic techniques. Her current research concerns how listening to sound is learnt and practiced in medicine. She works across the fields of medical anthropology, the sociology of health and illness, and science and technology studies. Anna is the author of numerous articles and book chapters in sociology, anthropology, internet studies and other social science journals, and regularly blogs about a fascinating technology vastly invisible in medical practice: pneumatic tubes.