Treasures of the Earth: Metals
Season 43 Episode 19 | 53m 40s
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?
Expires: 09/25/20Video has closed captioning.