Dr. John Nolt introduces the themes of his book A Land Imperiled: The Declining Health of the Southern Appalachian Bioregion.

The environment of Southern Appalachia is a collection of complex, interrelated systems that needs care and protection to function in full health. A Land Imperiled is a symptom-by-symptom look at several ecological issues threatening the health of the southern high country, providing examples of how the damage can be reversed to sustain ourselves and our region's natural legacy.

Nolt is Professor of Philosophy at the University of Tennessee Knoxville, and the author of seven books. He spoke on June 20, 2012.