A team of engineers suggests a new theory on how Egypt’s first pyramid was built — a water elevator used to float heavy stones through the middle of the structure.

Maya people who had fled their cities after a volcano erupted returned and built an enormous pyramid from the volcanic debris.

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Archaeologists have uncovered a 4,600-year-old step pyramid in Egypt that predates the Great Pyramid at Giza by at least a few decades.

Researchers from Laval University in Quebec say they want to probe the pyramid's insides for a whole year using infrared thermography, a technology that they say would let them "see" through thick ...