stefan rahmstorf

POTSDAM – In 1845, Captain Sir John Franklin of the British Royal Navy led 128 men on two iron-plated steam ships, Erebus and Terror, into the Arctic, where they eventually disappeared. The voyage was the culmination of four centuries of failed attempts to navigate the Northwest Passage – a direct route from Europe to Asia across the Arctic Ocean – and remains one of the greatest tragedies in the history of polar exploration. Today, a far greater Arctic tragedy is unfolding: the Arctic sea-ice cap is melting. Last month, an unprecedented new low was reached after decades of decline. Indeed,…