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 ...

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 ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. At a laboratory in Newark, New Jersey, a gray liquid swirls vigorously inside a ...