“Two scientists from the University of Padua, Giulio Fanti and Roberto Maggiolo, report in the journal’s April edition the discovery of a heretofore-undetected reverse image on the shroud. They say the smaller, fainter image on the back of the cloth depicts just the face and hands. And it’s a superficial image, adhering only to the outermost fibers, just like the image on the front. “It is extremely difficult to make a fake with these features,” Fanti writes.”

- full article at http://www.christianitytoday.com/ct/2004/012/32.56.html