In a symposium on scientific illustration from the Renaissance to the digital age, historians specializing in the scientific illustrations of the Renaissance with contemporary scientists, technologists and artists to explore the longstanding relationship between science and illustration. On day two, the final discussion focused on "the unseen." Speaker Biography: Vincent Rossi is senior 3D program officer at the Smithsonian Institution. For transcript and more information, visit www.loc.gov/today/cyberlc/feature_wdesc.php?rec=8389