Copper isn't just a pretty metal. It plays a part in minting coins (although in ways you wouldn't expect), can substitute for iron in the blood of some creatures, and is responsible for the changing ...

For a lot of reasons, home etching of PCBs is somewhat of a dying art. The main reason is the rise of quick-turn PCB fabrication services, of course; when you can send your Gerbers off and receive ...

In recent weeks, you've likely heard a lot about rare-earth substances, thanks to President Trump's stalled efforts to secure a minerals deal with Ukraine and his talk of annexing Greenland. These ...