Traces of ancient life were locked inside a 2.5 billion-year-old ruby from Greenland, according to a new study. The planet's oldest rubies, sparkling red gemstones made up of a transparent red mineral ...

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 ...