Every few years, someone comes up with a new "this is how the pyramids were built" theory. In addition to aliens or long-forgotten super technologies, many theories rely on unfeasible ramps that'd ...

The Egyptian pyramids remain one of history’s greatest engineering achievements. This video explores how ancient builders may ...

It was a real pyramid scheme. Scientists have proposed a groundbreaking new theory on how Egypt’s Great Pyramid was built, positing that they used a pulley and counterweight system to erect it so ...

Color illustrations, including front cover. Hidden ramps may solve the mystery of the Great Pyramid's construction. https://siris-libraries.si.edu/ipac20/ipac.jsp ...