The Central Bank of Malta, in collaboration with the Mediterranean Conference Centre, has issued a commemorative silver coin marking the 450th anniversary of the construction of the historic Sacra ...

This cliff in Hawaii is a hotspot for adrenaline junkies—but beneath the waves, a different kind of thrill awaits. I brought my metal detector and scuba gear to explore what’s been lost beneath the ...

Dean Caldwell of Cicero has been mining opal and obsidian for six months of the year in Mexico for the last 15 years. Last ...