BROADCASTS.com

South Dakota rancher Dan O\u2019Brien knows a lot about bison. He\u2019s operated a bison ranch for decades and was asked by the University Nebraska Press to write a book on the topic. Host Pat Leach talked to O\u2019Brien about his book, "Great Plains Bison" and his appearance in the upcoming Ken Burn\u2019s documentary, \u201cThe American Buffalo..\u201d