December 31st would have been John Denver's 80th birthday, so I gathered up some of his friends to talk about his environmental impact, his musical legacy, and perhaps most importantly, the concept that one person can make a world of difference. My guests on this very special episode are educator Dr. Cheryl Charles, legendary country/western artist Michael Martin Murphey, and communications coach Donna Lipman, who share their thoughts, memories, and more of JD.