Here's a message which will appear if the video isn't supported. A Flash alternative can be used here if you fancy it.
Jun 23, 2011 2:53 PM
How Shrunken Heads Work
Although U.S. museum collections are rife with counterfeits, shrunken heads are far from fiction. The Shuar tribe of Ecuador has shrunken heads for centuries. Learn the methodical process of shrinking a head and how they're used in this episode.