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Treasures of the Earth: Metals
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Drill down to discover how Earth's natural treasures provide bountiful energy to power...
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Gemstones like diamonds, rubies, opal and jade are the ultimate treasures. Delve into...

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NOVA  ·  Episode 4319

Treasures of the Earth: Metals


Gold, bronze, iron, steel... metals are pillars of our civilization, but what makes them so special? Discover their unique properties and explore how our mastery of metals has led us from the stone age to today's hi-tech world.

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