We know you are here, our brothers and sisters . . . Pressia barely remembers the Detonations or much about life during the Before. In her sleeping cabinet behind the rubble of an old barbershop where she lives with her grandfather, she thinks about what is lost-how the world went from amusement parks, movie theaters, birthday parties, fathers and mothers . . . to ash and dust, scars, permanent burns, and fused, damaged bodies. And now, at an age...