NOVA: Treasures of the Earth
Clip | 8m 15s
Gems, metals, and power: They're aspects of our everyday lives, and in their own ways, they are the very backbone of our modern-day civilization. Their history, the science behind their creation, and the vital roles they've played in the formation of society are documented in a new, three-part series from NOVA, called Treasures of the Earth.
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