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 ...

Have they finally solved the ancient Egyptians’ pyramid scheme? Aliens might not have built the pyramids — but the ancient ...

How ancient builders raised the mighty pyramids still captures the curiosity of historians and scientists. Despite decades of digging, high-tech scanning, and countless theories, the puzzle remains: ...

A groundbreaking study proposes ancient Egyptians built the Great Pyramid using an "Integrated Edge-Ramp" system, spiraling ...

TIVOLI, Italy (AP) — Long ago, when Romans wanted to build a new temple, they would head to the nearby quarries of Tivoli, chisel out blocks of porous rock called lapis tiburtinus — now known as ...

New research suggests seabird guano helped transform the Chincha Kingdom into one of the most prosperous societies in ancient Peru. Chemical clues in centuries-old maize show farmers fertilized their ...