In recent weeks, you've likely heard a lot about rare-earth substances with hard-to-pronounce names, but experts warn that ...

Copper is not a rare earth mineral nor one of the 50 “critical minerals” designated by the US Geological Survey. However, in 2023, the Department of Energy deemed it a “critical material for ...

She explains that while the microchips the company uses contain rare earth minerals, around 90% of a finished circuit board is copper. Take LEDs, for example: while the rare earth element terbium ...