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03-20-2023, 06:32 PM
X-ray technology has allowed researchers a glimpse at the reaches of the Yellowstone landmark’s prized stone and its importance to Indigenous people.
More... (https://www.nytimes.com/2023/03/20/science/yellowstone-indigenous-people-obsidian.html)
More... (https://www.nytimes.com/2023/03/20/science/yellowstone-indigenous-people-obsidian.html)