It sounds almost impossible - melting a solid gold bar using nothing but sunlight. But with a massive magnifying glass and ...

At the biggest jewelry center in the United States, Alberto Hernandez fired up his machine on a recent day and waited until it glowed bright orange inside before shoveling in an assortment of rings, ...

On a weekday afternoon in February, Josh Morelock, the general manager of Gold Refinery of San Diego, scooped glinty gold objects from a bowl and placed them into smelter fired up to 2,000 degrees ...

Wafer-thin sheets of gold shot briefly with lasers can be heated up to 14 times their melting point while remaining solid, far beyond the theoretical limit, raising the possibility that some solids ...