Crohn's disease is a painful and sometimes scary condition, but for Larry Smarr of the University of California San Diego, it was a fascinating learning opportunity - not only for him, but for the general public he allowed to examine his colon in virtual reality. It was also a learning opportunity for his doctor, who Smarr invited to look at the virtual 3D models he had made of his intestine before surgery. Dr. Sonia Ramamoorthy, after peering into the 3D world of Smarr's intestines, discovered an abnormality that would have required a longer and more complex procedure had she not been able to prepare for it ahead of time. Read more at