November finds the northern hemisphere in the grip of the approaching cold winter-months. In the far North, snow is beginning to blanket the earth and temperatures are dropping uncomfortably below zero. At this time of year, about 1200 polar bears congregate at the shore of the Hudson Bay in Canada, waiting for the sea ice to form that will allow them to go out in pursuit of their main food-source: seals. But recent climate changes are increasingly delaying the sea ice formation, preventing the bears from hunting.