Add Yahoo as a preferred source to see more of our stories on Google. The humble marble has been around for millennia: smooth spheres of stone or clay or steel or glass, in the pockets and toy boxes ...

To most people, marbles are colorful kids’ toys. For others, they are prized collectibles. Some marbles — if they’re unique and in demand — can fetch $14,000 or more at auction. Others are simply ...

Michelle Starr is CNET's science editor, and she hopes to get you as enthralled with the wonders of the universe as she is. When she's not daydreaming about flying through space, she's daydreaming ...