It is not a planet for polar bears: research confirms that they will not survive long summers without ice. Adult males can reach three meters in length and weigh 680 kilos, compared to two and a half meters and 360 kilos in weight, which grizzly bears reach.
In Hudson Bay, global warming is affecting bears at a much faster rate than in other Arctic regions. The population has already declined by 30% since 1987, and the study confirms that all polar bears in the Arctic are at risk of starvation.