Research from a Purdue anthropology professor has uncovered the first evidence of prehistoric metal trade between Asia and North America.
Anthropology professor and metallurgy expert H. Kory Cooper analyzed two objects uncovered in northern Alaska. The two tiny artifacts—a buckle and a small bead—are made of bronze. That’s important because bronze doesn’t occur in nature--it’s an alloy.
By looking at how such alloys are mixed, anthropologists can pinpoint metals age and where they’re from.