This ancient technological marvel was staggeringly far ahead of its time.

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 ...

PHILADELPHIA (WPVI) -- It's a piece of Philadelphia history that powered the future. The world's first electronic computer was born at the University of Pennsylvania. It was a room-sized machine built ...