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 ...

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 ...

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 ...

We created the sharpest obsidian knife, surpassing the precision of a scalpel, using a 60,000 PSI waterjet to craft a very thin blade. The video also features the unique properties of petrified wood.

Yahoo Soccer is powered by OneFootball, the ultimate destination for news, live matches, scores, highlights, and more. MEXICO CITY (AP) — Traces of blood and fragments of muscle, tendon, skin and hair ...

Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in new window) Click to print (Opens in new window) Click to email a link to a friend (Opens in new window) Click to ...