Anderson Cooper did an interesting report about this on 60 Minutes a couple of years ago. Video here: http://www.cbsnews.com/stories/2007/10/19/60minutes/main3

Anderson Cooper did an interesting report about this on 60 Minutes a couple of years ago. Video here: http://www.cbsnews.com/stories/2007/10/19/60minutes/main3386661.shtml http://www.cbsnews.com/stories/2007/10/19/60minutes/main3386...