EBRO DELTA, Spain — Perched on an oyster and mussel farming platform in the middle of Fangar Bay, Vacile Cotirlet works with the assured movements that come with two decades of experience. Cotirlet secures small cylinders covered with oyster spat onto a long rope. He’ll drop several such ropes off the wooden lattices that make … Continue reading Can Spain keep the rising sea from washing away a critical delta?