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Interesting Engineering11h
They're called rare earths. The name's a lie but the scarcity isn't
The term 'rare earth' dates to an 18th‑century Swedish mine and survives mainly out of habit. In truth, these 17 metals are ...
Scientific American16h
What Is a Galaxy?
The word itself comes from galaktikós kyklos, or “milky circle,” the ancient Greek term for the Milky Way, our home galaxy.