NOVA

Treasures of the Earth: Metals

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?

Making Steel From Trash

2m 34s

Could pieces of plastic garbage become the resource we need to construct buildings?

Previews + Extras

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