Early on a warm September morning in southern Italy, Giovanni Nicandro sets out from the port of Taranto in his small boat. Summoning his courage, the mussel farmer inspects his year’s work – only to find them all dead, a sight that almost brings him to tears. “We have many problems,” he says. “The problems start as soon as we open our eyes in the morning.” The loss is total – not only for Nicandro but also for Taranto’s 400 other mussel farmers, after a combination of pollution and rising sea temperatures devastated their harvest. In Galicia, a region in