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NOVA
The Volga Trade Route
The Vikings didn’t invent crucible steel, so where did it come from? Many experts believe that the Volga trade route supplied Vikings with prized crucible steel from the Middle East, where people were more practiced in the art of forging it.
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A team tackles the restoration of iconic Notre Dame Cathedral.
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How could a single ship cause a major supply chain crisis around the globe?
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Sir David Attenborough explores a site with traces of ancient mammoths and Neanderthals.