Greenland: The SS Terra Nova lived a full life at the ends of the earth. Built in Scotland in 1884, the ship had a history in the northern sealing industry before being enlisted for Robert Falcon Scott’s ill-fated expedition to the South Pole. After its return from Antarctica in 1913, it went back to sealing for decades before being drawn into wartime supply service in 1942 and sinking the next year. An oceanographic expedition testing sonar equipment in the Labrador Sea has just located the wreck.