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Treasures of the Earth: Metals Preview

Preview: Season 43 Episode 19 | 30s

The enduring luster of gold, the conductivity of copper, the strength of steel—the special properties of metals have reshaped societies and defined eras; they have such an important role in human history that entire ages have been named after them. But what gives metals their astounding characteristics?

Aired: 10/04/16

Rating: NR

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