Detail of Martellus map under natural light (left) and enhanced with multispectral imaging (right)(Images by Lazarus Project / MegaVision / RIT / EMEL, Courtesy Beinecke Library, Yale University)
When Christopher Columbus landed in the Caribbean in 1492, he assumed he was in Japan. This was partly due to his fifteenth-century naïveté regarding world geography, but also because he had departed Spain armed with misinformation. It is believed that one of the sources that Columbus consulted bef