The co-founder of international architecture practice Snøhetta, Kjetil Trædal Thorsen, has spoken to CLAD about the opportunities and philosophical questions posed by the advent of technology that enables vulnerable heritage sites to be “reprinted.” Advances in 3D scanning, casting and printing are allowing designers and preservationists to create mirror images of both natural and man-made pieces of heritage. Examples include the Institute for Digital Archaeology, which has recreated Syria's Palmyra