[David Helfand]: She pulled out eight plane tickets—there were eight of us in the class—to fly us to Tucson, Arizona for the month of January, we used to have January off, just to meet astronomers, ...

Gem hunters have always been natural geologists, seeking the mother lode long before researchers explained how gems and minerals form. Now, scientists want to officially link precious gems to their ...

After its discovery in the form of remains two years ago, researchers have finally found ruby seadragons off the coast of Australia. Michelle Starr is CNET's science editor, and she hopes to get you ...