Scientists Have an Audacious Plan to Map the Ancient World Before It Disappears
In the center of Siena, Italy, a cathedral has stood for nearly 800 years. A black-and-white layer cake of heavy stone, fine-cut statuary, and rich mosaics, the imposing structure—now visited by more than a million tourists each year—would seem to be a permanent fixture of the city’s past, present, and future. Most people call it, … Read more