Like other igneous rocks, the glossy glass originates from molten rock that has been spewed out from the bowels of the Earth via volcanoes. Before we get into the snowflakes, obsidian is formed ...

Archaeologists have evidence for long-distance trade routes across North America that could totally rewrite previously ...

Hand-carved arrowheads and jagged spears made of obsidian, a sharp rock formed by volcanic magma, are remnants of vast prehistoric trade networks that once cut across western North America.

The obsidian artifacts were traced back to four primary regions, including one in Idaho, one in Wyoming, and two in British Columbia, experts said. Photo by Todd Kristensen Volcanic glass has been ...

Obsidian Sync has been rock-solid and, more importantly, blazing fast. Plain text files have the benefit of being extremely lightweight, so the combination of speedy sync and being able to view a raw ...