Humble fragments of clay crucibles and coin molds flecked with gold excavated by a joint team of British and Malian archaeologists in 2005 led archaeologist Sam Nixon, in consultation with Thilo ...

According to the World Gold Council, about 195,300 tons (177,200 tonnes) of gold have been dug out of the ground in all of human history. Countless lives have been lost obtaining the rare metal, and ...

Medieval stained-glass windows colored in gold nanoparticles help purify air when lit by the sun, a new study finds. "For centuries people appreciated only the beautiful works of art, and long life of ...