Underwater archaeologists have recovered 47 lumps of orichalcum – an alloy primarily consisting of copper, zinc and small percentages of nickel, lead, iron. The cargo was recovered off the coast of Gela in southern Sicily.
Scientists are trying to recognise the chemical elements used in painting of Greek vessels through X-ray imaging. The spots marked in blacks, reds and whites can be identified as particular elements, such as iron, potassium, calcium and zinc.
Five years of excavation at the Han Dynasty burial site of Haihunhou revealed more than 20000 artefacts, making the site one of the great archaeological finds of all time in China.