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Metals

Urgent need to recycle rare metals

Rare earth metals are important components in green energy products such as wind turbines and eco-cars. But the scarcity of these metals is worrying the EU.

Medieval copper smelter find is Norway's oldest

Medieval copper production in Norway was surprisingly sophisticated, a new archaeological find suggests

The Archbishop’s mint

The medieval coin workshop found in Trondheim is the world’s best preserved. Now scientists have reconstructed the entire coin-making process.