Engines of Our Ingenuity 1086: An Obsession with Obsidian

Episode: 1086 Aztec obsidian, too good to give up Today, we ask why the Aztecs didn’t make full use of metal.

| January 6, 2016, 6:00 AM

Episode: 1086 Aztec obsidian, too good to give up

Today, we ask why the Aztecs didn’t make full use of metal.