One thousand years ago, the first settlers of Rapa Nui — also known as Easter Island — feasted on a fusion cuisine of plants native to Polynesia but also ones indigenous to South America ...

The edges of this blade are dull, possibly as a result of ... mineral types represented in the cache—this point is made of obsidian—it is clear that its owner either traveled far to procure ...

For example, the Eccentric is from an obsidian source in south central Mexico called Pachuca. In other cases, XRF helps archaeologists determine the nature and extent of ancient trade. For example, ...