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 ...

Teotihuacan (pronounced te-o-tee-waka-n) is believed by archeologists to be the first major city of the Americas. It was located in the northeastern region of the Valley of Mexico, some 35 miles (56 ...

The 2,300-year-old royal tomb of a Kushite king appears nearly untouched—and submerged in rising groundwater. What’s an archaeologist to do? With more than 20 ancient pyramids sprawling across 170 ...