Rare earths, in case you need a refresher, are a class of 17 elements used in everything from mobile phones, to hybrid car batteries, to flat-screen TVs, to guided missile systems, to wind turbines.
If it involves cutting-edge modern technology, chances are it requires rare earths.
So whatâs the rub? Right now, China controls 93-97% of the world supply, depending on the source you choose to cite at your next cocktail party.
Still, the Chinese decision to stop exports to the U.S. marks one of the strangest export bans in recent history.