The individual silica nanoparticles (glass beads, basically) are clear, but when packed together in certain configurations ...

Researchers found over 270,000 beads in a tomb in Spain, and it could be the largest collection ever recorded. The beads were made out of shells, stone, and animal bone, and it likely took months ...

Add articles to your saved list and come back to them any time. More than half of Sydney’s fare-paying adult commuters could be forced back onto Opal cards and prevented from using mobile phones ...

This large Australian light opal cabochon weighs 117.85 carats. Small play-of-color flashes of orange and green predominate in a pinfire pattern, with spots of a more muted blue over a grayish ...

Google Maps manages to provide imagery of almost every street and corner of the world, but a horrifying discovery has just been made and people can’t work out what it all means. A disturbing ...