Every time a wave crosses a boundary between two crystals, known as a grain boundary, it loses energy. If the crystals are smaller, there are more of these grain boundaries in a given volume.

Crystals have been highly coveted since civilisations as old as ancient Egyptian and Greek. These semi-precious stones are thought to possess metaphysical properties, including magical and healing ...

A royal tomb belonging to an ancient Egyptian king has been unearthed, in what has been called a “remarkable” discovery by ...

Researchers who sniffed mummified remains in the name of science were greeted more with a blessing than a curse.