In this video excerpt from NOVA: "Hunting the Elements," New York Times technology columnist David Pogue visits the New York Mercantile Exchange to learn about copper's essential role in human civilization. Find out about the valued properties of copper and its many applications, including electronics and building materials. Hear about the global copper market and discover how copper is such an important metal that its price can be used to gauge economic health.

This video is available in both English and Spanish audio, along with corresponding closed captions.