A little more than a thousand years ago, monks at Saint Catherine’s Monastery in Egypt’s Sinai desert removed Western Palestinian Aramaic and Greek writing from animal-skin parchments. They replaced ...

In a monastery library on the Sinai Peninsula, a devotional handbook by the monk John Climacus sat quietly for centuries while a far older scientific treasure hid beneath its ink. Medieval scribes had ...

Before telescopes, ancient Greek astronomers relied on naked-eye observations of the night sky to understand the universe around them. The meticulous star catalog belonging to one of the best of these ...