In a metal like copper, however, the outer electrons swim around freely and are shared by all the atoms. That’s why ...

Metal detecting can be a great way to blow off steam, but some lucky hobbyists locate significant monetary and historical value items. It’s a lottery of sorts, but finding treasure is a fun prospect, ...

'ZDNET Recommends': What exactly does it mean? ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including ...