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What Are Rare Earths, Crucial Elements in Modern Technology? 4 Questions Answered

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A handful of europium

A handful of europium.

Credit: Alchemist-hp, CC BY-SA

Most Americans use rare earth elements every day—without knowing it, or knowing anything about what they do. That could change, as these unusual materials are becoming a focal point in the escalating trade war between the U.S. and China.

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