Like so many of us, Bill McKibben grew up believing—knowing—that the United States was the greatest country on earth. As a teenager, he led American Revolution tours in Lexington, Massachusetts; he sang "Kumbaya" at church; and with the rise of suburbia, he assumed that all Americans would share in the wealth. But 50 years later, he finds himself in a doubtful nation strained by racial and economic inequality. Digging into America's history and his own, McKibben assesses the problems, and offers reasons for hope.