One of the most iconic and awe-inspiring structures of the ancient world continues to mystify historians and archaeologists. This square-based pyramid, like most pyramids, has been thought to have ...

For the first time since it was sealed around 4,500 years ago, scientists have peered into a hidden passage inside the Great ...

Pyramids have been built around the world but the most famous pyramids of all time are probably the ones in Egypt. These triangular structures - of which hundreds have been constructed -- were built ...

The volume of a 3D shape is the amount of space inside it. Volume is measured in cubic units such as cm³ and m³. The volume, or capacity, of liquids is measured in millilitres or litres. The surface ...