The combustible sedimentary rock, better known as coal, was not only crucial to the onset of advanced technology here on Earth, but it should also be key to the development of advanced E.T.s residing ...

Editor’s Note: Our usual Digest Editor Jeff Remsburg is taking a rare break — his first extended vacation in years. While he’s away, our team has assembled a stellar roster of guest analysts to keep ...

The seventeen chemical elements classified as rare earth metals possess unique magnetic, luminescent, and electrochemical properties that are invaluable for various applications. Despite their name, ...