June 17, 2008 ... Scott Wallace, a writer for National Geographic will join us, to tell us why scientists know very little about the tribes and what recently released ...
http://www.npr.org/blogs/talk/2008/06/june_17th_show.html
June 17, 2008 ... National Geographic writer Scott Wallace has trekked South America to discover uncontacted tribes like this one, and joins us today. ...
http://www.npr.org/blogs/talk/2008/06/uncontacted_amazon_tribes.html
