Ever had a headache so big, you felt like drilling a hole in your head to let the pain out? In Neolithic times, trepanation – or drilling a hole into the skull – was thought to be a cure for ...

It is the first conclusive evidence of use of stone implements in human sacrifice. Experts in Mexico have found blood cells and fragments of muscle, tendon, skin and hair on 2,000-year-old stone ...

This experiment started with a simple but risky question: could obsidian be worked like glass and shaped into a knife. Instead of cooperating, the material kept cracking, slumping, changing color, and ...

MEXICO CITY – Traces of blood and fragments of muscle, tendon, skin and hair found on 2,000-year-old stone knives have given researchers the first conclusive evidence that the obsidian blades were ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. From card [referring to all 12 knives ...

X-ray technology has allowed researchers a glimpse at the reaches of the Yellowstone landmark’s prized stone and its importance to Indigenous people. By Jim Robbins YELLOWSTONE NATIONAL PARK, Wyo. — ...

In this undated image released by Mexico's National Institute of History and Anthropology, INAH, sharp obsidian knives found in Cantona, in the central Mexico state of Puebla, are displayed for photos ...

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