Abstract

Rare earth elements are used widely around the world. They are the greenest option for many technologies, for example, in automobiles. China dominates rare earth production. In 2014 it is mining/extracting 90+% of the world's rare earth supply. With one overwhelmingly dominant rare earth producer, the rare earth industry will be unstable till 2020 at least. New mine projects will eat into this dominance, but slowly. Recycle of end-of-use rare earth products will also help. For many applications (e.g., rare earth permanent magnets, rare earth rechargeable batteries), non-rare earth alternatives exist. However, these are usually less green, hence usually less desirable. For this reason, rare earths will always be wanted for many applications.

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