These out-of-place artifacts, or OOPArts, are surprising for their place and time — but there's an explanation behind each ...

Archaeologists have long known that complex societies can rise, flourish and then disappear so completely that only scattered ruins hint at what was lost. Now a new wave of research is sharpening the ...

The Indus Valley civilization, located in present-day Pakistan and India, went through four periods of intense drought, which ...