On this episode of This Green Earth acclaimed nature writer David Gessner talks about his new book: Leave It as It Is: A Journey Through Theodore Roosevelt's American Wilderness . The book is an honest account of Roosevelt's - at times - flawed and inconsistent relationship with nature, wildlife and, Native Americans. But Roosevelt also believed in what Gessner calls "muscular environmentalism"; Nature and public lands as a source of physical, intellectual and emotional wellness. As a result, He