Warren Johnson, PhD, is professor emeritus and former chairman of the Geography Department at San Diego State University. A geographer, educator, and author, he has a profound appr...view moreWarren Johnson, PhD, is professor emeritus and former chairman of the Geography Department at San Diego State University. A geographer, educator, and author, he has a profound appreciation for the land, which led him to publish his 1978 bestselling book Muddling Toward Frugality. This book secured Johnson’s place as among the first to advocate sustainability in the midst of a frenzied materialistic world. His life-long fascination with sustainability began with his PhD where he examined the influence of medieval thinking on the development of the British National Parks system. An honored professor emeritus of cultural geography, natural resources and energy, he now applies his enthusiasm for the medieval Age of Faith to examine the roots of sustainability.view less