"Douglas Brinkley brings to this magnificent story of Theodore Roosevelt's crusade on behalf of America's national parks the same qualities that made TR so fascinating a figure—an astonishing range of knowledge, a superb narrative skill, a wonderfully vivid writing style and an inexhaustible energy." —Doris Kearns Goodwin, author of Team of RivalsA vast, inspiring, and enormously entertaining book.” — New York Times Book ReviewFrom New York Times bestselling historian Douglas Brinkley comes a sweeping historical narrative and eye-opening look at the pioneering environmental policies of President Theodore Roosevelt, avid bird-watcher, naturalist, and the founding father of America’s conservation movement—now approaching its 100th anniversary.