Engineering has moved inside the body to innovate like never before. In neuro-science, brain implants can provide ‘psychic’ communication for people with locked-in syndrome. In medication a new technology aims to deliver chemo therapy and other drugs directly to the parts that need them by bubbles in the blood stream. And ingestible electronics are being made to fight disease by sending antibody-directing messages straight from the gut to the brain. The BBC and the Royal Commission for the Exhibition of 1851 have come together to stage a special event. Presenter Caroline Steel is joined by Tom Oxley, professorial fellow at Melbourne Medical School; Eleanor Stride, OBE, professor of Biomaterials at the University of Oxford; Khalil Ramadi, director of the Ramadi Lab for Advanced Neuro-engineering and Translational Medicine in Abu Dhabi; Assistant Professor of Bioengineering, New York University.