Historian Shelagh Grant on the coming struggle over the Canadian Arctic, and why we may soon lose our sovereignty in the North.

An interview with Arctic historian Shelagh Grant is presented about her book "Polar Imperative: A History of Arctic Sovereignty in North America." When asked if it is fair to say that the historical record shows that every political development in the Arctic is based in climate change, she replies that yes, almost all of them are. Grant comments on why she doesn't think Canada is prepared for China and Greenland's interest in the Arctic. She discusses how Canada obtained Ellesmere Island.