On this week’s episode of, I journey deep into the heart of Sardinia to share the story of su filindeu, or “the threads of ...

The mineral was first discovered by German mineralogist August Breithaupt in 1821, in a weathered brown coal deposit in the ...

A dusty envelope misplaced in a government archive has rewritten a chapter of mineral history. That 1949 letter, discovered ...

China has pulled back its rare earths exports, which are vital to everyday technologies and American defense. But the U.S. has its own secret stash.