Edmonton Journal: When University of Alberta scientist Andrew Derocher caught and tagged a female polar bear in the southern Beaufort Sea last April, he didn’t expect that she would stray too far. Keep in mind that “too far” is a relative term in the world of polar bear science. A small home range for a polar bear in the High Arctic can be 50,000 to 60,000 square kilometres. A large home range such as that in the Bering and Chukchi seas in Alaska and Russia may be in excess of 350,000 square …