New York Times: The 130 inhabitants of this tiny island off the coast of Brittany are survivors. They and their ancestors, who trace their origins to the Celtic druids, have lived through frequent periods of hunger, a terrible flood and two cholera epidemics. During World War II, many of the islanders refused to accept German occupation and fled by boat to join Charles de Gaulle’s Free French Army. Today, the residents of Île de Sein are confronted by a more existential threat. With increasingly rough storms and…