"Scientist at Cornell University have been showing the potential for 3D printers by creating a replacement ear using a 3D printer and an injection of living cells... Once refined, the technique will allow biomedical engineers to print customised ears for children born with malformed ones, or people who have lost theirs and have not found them down the back of the sofa. While prosthetic reconstructions are suboptimal; they don't look realistic and they lack the qualities of real tissue, the 3D printer versions are pretty good..."