Obsidian – a type of volcanic glass – can produce cutting edges many times finer ... look nothing like the decorative flint-knapped knives of Neolithic man, often resembling their modern ...

In the last obsidian video we cut it into a cube. This time we decided to do some waterjet cutting and make a knife out of it. Donald Trump Gives DOGE Update as Elon Musk Says He'll Step Down in ...

said it was the first time to her knowledge that such tissue remains had been identified on obsidian knives. “This is a compelling demonstration that these knives were used to cut human flesh ...

said it was the first time to her knowledge that such tissue remains had been identified on obsidian knives. "This is a compelling demonstration that these knives were used to cut human flesh ...

But the community also relied on everyday objects made of different kinds of obsidian, like blades for cutting and scraping ... such as this small knife, were buried as offerings at Tenochtitlán.

A greenish obsidian blade, believed to have been found ... where many Indigenous people on the expedition got raw materials for cutting tools, the researchers found. It's possible that an ...