摘要
Rare earth metals： We may not know what they are, but they＇re all around ~us in our daily lives. Seventeen chemical elements buried in the Earth＇s crust, they play a vital role in everyday electronic devices - as the power inside lithium-ion batteries - and in many clean technologies, from electric car motors to solar panels and wind turbines. It＇s no wonder, then, that our demand for dyspro- sium, neodymium, terbium and the rest has increased rapidly in recent years.
