The New York Times

Obsidian Cliff: Humanity’s Tool Shed for the Last 11,500 Years

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. — ...
Charlotte Observer

Ancient artifacts made of volcanic glass keep turning up in Canada. But how?

Volcanic glass has been discovered at more than 500 archaeological sites in western Canada. Geologically-speaking, it shouldn’t be there. Now, researchers may have answered how these artifacts made of ...
The New York Times

Yellowstone National Park’s Obsidian Cliff

X-ray technology has given researchers a glimpse at the reaches of this landmark and its importance to Indigenous people. Natalie Behring for The New York Times Obsidian is among the most prized tool ...
Napa Valley Register

Museum program teaches the skill of chipping arrowheads

The past came alive Saturday afternoon at Napa Valley Museum in Yountville with an ancient arrow-making technique that was essential to the survival of Native American tribes throughout the country.