This arrowhead from Obsidian Cliff glass is about 1,500 years old. Credit... Natalie Behring for The New York Times.

Obsidian plugins that made me rethink my productivity stack. After downloading the Kanban plugin, I started creating a new board for my blog post series with columns like Ideas, Drafting, Review ...

On her first day on the job, she took a tour of the museum's collection and saw hundreds of pre-Columbian artifacts: obsidian arrowheads, hand tools, a grinding stone and more.

But the more mundane tools like arrowheads, blades, and scrapers were crafted from a range of obsidian types. These were found in construction fill and common areas, not elite offerings.

It started with the arrowheads he found with his dad near Vantage, Washington, and grew to include artifacts dug from the permafrost on St. Lawrence Island in the Bering Sea. Bruce Ottmar’s ...

Some of the obsidian artifacts, including arrowheads and spear tips, traveled nearly 750 miles from their source, according to Allan. An obsidian spear head from the Red Deer area. ...

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. New ...

Ancient humans took advantage of this property to create obsidian cutting and piercing tools, such as knives and arrowheads, with evidence of such artifacts dating back thousands of years.

Obsidian might sound like a buzzy new goth band, but it’s also the name of a new smart speaker from Australian hi-fi brand Pantheone Audio. It might be named after a type of volcanic glass that forms ...

SEYMOUR: A lot of arrowheads made out of different materials, especially obsidian, hand tools like axes. I have a grinding stone.