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Vikings were addicted to silver; they collected it as coins, as ingots, arm-rings, jewellery. On one Swedish island alone archaeologists and metal detectorists found some 200,000 silver coins and there is a silver hoard there for almost every Viking farm. Why? What can the coins, many of which came from Asia, tell us not just about the huge Viking trading area but also about their society? And how did this influx of silver transform European economy and life in the early Middle Ages? These questions have occupied historians and archaeologists for a long time but now advanced scientific techniques such as DNA analysis and microscopic laser sampling are yielding new, more detailed and sometimes surprising answers.

Rajan Datar gets an update on Viking research from archaeologist Marianne Hem Eriksen from the University of Leicester; Anders Winroth, historian from the University of Oslo; Soren Sindbaek, archaeologist from Aarhus University; and sound archaeologist Rupert Till from Huddersfield University.

(Photo: A horn of plenty from a Viking grave. Credit: Werner Forman/Universal Images Group/Getty Images)