Alexander Seifalian is professor of nanotechnology and regenerative medicine at University College London I work for University College London (UCL) on the campus of the Royal Free hospital. I only live five minutes' walk away, and I begin the day by dropping off my five-year-old son, Nicholas, at Hampstead Hill School next door. After going through emails and admin, I spend a couple of hours working in the lab. My research is aimed at making organs in the lab using nanomaterials and stem cell technology. At the moment I'm working on an oesophagus, a whole face transplant and an artificial...