Engineers Found Evidence of Hydraulics in an Ancient Pyramid, Solving a 4,500-Year-Old Mystery

Researchers found evidence that hydraulic systems might have been used to build Egypt's Step Pyramid of Djoser 4,500 years ...
Greek Reporter

Ancient “Stepped Pyramid” of Greece Sparks Controversy

The tomb of Amphion sparks debate over whether an Early Helladic tumulus or a stepped pyramid could reshape Greek ...
Ancient Architects on MSN

How the Great Pyramid’s Portcullis System Really Worked

Hidden between the Grand Gallery and the King’s Chamber lies the Portcullis Antechamber — an ingenious security system with three massive granite blocks designed to seal the pharaoh’s tomb for eternit ...
Bureau of Meteorology

How to calculate the combined sea and swell height

Total wave height, also known as significant wave height, describes the combined height of the sea and the swell that mariners experience on open waters. The Bureau provides model forecasts of total ...