Description given on Youtube:
See the full episode at http://video.pbs.org/video/995219004
An encore presentation of NATURE “Holy Cow” aired August 12, 2006 on PBS.
Cows provide just about all of our basic needs, from milk and meat to muscle. Explore how we’ve changed the cow to meet our needs.
For more information, please visit
http://www.pbs.org/nature/holycow/