And what’s happening to Plaquemines is happening all along the coast. Since the 1930s, Louisiana has shrunk by more than two thousand square miles. If Delaware or Rhode Island had lost that much territory, America would have only forty-nine states. Every hour and a half, Louisiana sheds another football field’s worth of land. Every few minutes, it drops a tennis court’s worth. On maps, the state may still resemble a boot. Really, though, at this point, the bottom of the boot is in tatters, missing not just a sole but also its heel and a good part of its instep.