The US' history goes back thousands of years, thanks to a wealth of archaeological sites that give insight into the first ...

New archaeological research by Tulane University and the Proyecto Templo Mayor in Mexico reveals how obsidian—a volcanic ...

The Aztecs were big fans of obsidian, and often used the razor-sharp volcanic glass to slice through the chests of human ...

Obsidian was central to Aztec life — not just for crafting sharp tools and sacred offerings, but as a reflection of political ...

Discover how an analysis of more than 700 objects reveals obsidian came into the Aztec capital from far and wide.