Obsidian is a volcanic glass used to make tools for Stone-Age man – and for modern surgeons.

You have found what appear to be scalpels. That’s right. We have just found two cutting blades made of obsidian, a volcanic glass that forms a ...

Working in a Bronze Age graveyard in Ikiztepe, Turkey, archaeologist Önder Bilgi has uncovered 14 skulls with rectangular cut marks. He believes the Ikiztepe people used obsidian "scalpels," found ...

An obsidian blade found at least 80 years ago turned out to be a nearly 500-year-old artifact left by explorers in the Texas Panhandle, a new study said. Photo from Southern Methodist University ...

An obsidian blade found at least 80 years ago turned out to be a nearly 500-year-old artifact left by explorers in the Texas Panhandle, a new study said. Photo from Southern Methodist University ...