釹:钕 – nǚ
Neodymium is one of the rare earth metals and a key component in advanced technology for magnets in wind turbines and electric vehicles.
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Rare earth metals are relatively abundant in the earths crust, but only occur in very low concentrations so that extraction is difficult and expensive.
Most rare earth metals come from China.
Extraction of metal causes a huge amount of waste and, in cities like Baotuo, in China, this can lead to devastating pollution.