In a glass case in Cairo, a 5,000-year-old stone disc carved from fragile schist looks less like a ritual object and more ...

More than 2,000 years ago, Greek artisans built a compact machine of interlocking gears that could track the heavens with a precision that still unsettles modern engineers. The corroded fragments of ...

A Greek shipwreck holds the remains of an intricate bronze machine that turns out to be the world's first computer. (This program is no longer available for streaming.) In 1900, a storm blew a ...