Book excerpt: A pioneering work of environmental journalism that vividly depicts the people, animals and landscapes on the front lines of change's inexorable march. A species nearing extinction, a tribe losing centuries of knowledge, a tract of forest facing the first incursion of humans-how can we even begin to assess the cost of losing so much of our natural and cultural legacy? For forty years, environmental journalist and author Eugene Linden has traveled to the very sites where tradition, wildlands and the various forces of modernity collide. In The Ragged Edge of the World, he takes us from pygmy forests to the Antarctic to the world's most pristine rainforest in the Congo to tell the story of the harm taking place-and the successful preservation efforts-in the world's last wild places. The Ragged Edge of the World is a critical favorite, and was an editors' pick on Oprah.com.