Using multispectral imaging, a team of Israeli researchers has discovered a hitherto invisible text on the back side of an ostracon (ink-inscribed pottery shard) that has been on display for half a century. The recto (upper image) and the verso (lower image) of the ostracon Arad 16: color images, multispectral images and manual drawings of the proposed reading. In red: team’s alterations and additions with respect to the original publication. Image...