Archaeologists working at the medieval market city of Tadmekka recently discovered a set of ceramic molds used to cast metal coins. Tadmekka is located today in the country of Mali on the edges of the ...

Since the early 1990s, geophysical surveys have become an increasingly important source of evidence for the layout of historic gardens. Geophysical surveys are fast ...

Earlier, people depended on touchstone tests or the local jeweller’s word. Those methods were quick but not always accurate. Today, most stores and manufacturing units use XRF machines, which check ...