Stephen Harper should lose sleep this week, as the Danish-owned Nordic Orion becomes the first cargo vessel to use the Northwest Passage as an international shipping route – at no little risk to Canada’s environment and sovereignty. Last week, the crash of a Coast Guard helicopter in the Northwest Passage underlined how very dangerous Arctic waters can be. The three men on board were wearing survival suits. They escaped the aircraft before it sank but froze to death in the hour it took for the icebreaker Amundsen to reach them. Although the Nordic Orion is ice-strengthened, Arctic storms, shallow waters...