Yascha Mounk offers a brilliant big-picture vision of the greatest challenge of modern time—how to bridge the bitter divides within diverse democracies enough for them to remain stable and functional.

For nearly sixty years the menace of nuclear war has hung over humanity, while at the same time the promise of nuclear energy has enticed us. In Megawatts and Megatons, two of the world's most eminent physicists, Georges Charpak and Richard L. Garwin, assess with consummate authority the benefits of nuclear energy and the dangers of nuclear weaponry.