After midnight, cottonwoods are inconsequential teeth, ripped from the ground by the Mississippi River. An elm snaps like a bird’s neck: an egret. The current betrays every fluttering heart and rages on. A rock becomes sepulcher to the uprooted nest. The river could be less cruel, the winter, more forgiving. Someone could have conceived of this world, but for days, no one but a pair of swans bears witness to the earthquake. The strange earth frees itself into unimaginable fissures. The bank...