All of these devices function because of 17 metals collectively known as rare earth elements. The scientists who gave the group that name in 1794 created a misnomer. Cerium alone is about as common in the Earth’s crust as copper. However, separating rare earth minerals from one another and from raw ore is intensely difficult. As a result, countries that control the processing of rare earth minerals have a lot of political leverage.
China processes most of the rare earth minerals used around the world, and it isn’t just consumer electronics that depend on Chinese exports. The US military’s F-35 fighter jets and Virginia-class submarines need rare earths too.