World leaders meet tomorrow in Norway to consider reducing polar bear hunting, reports the Independent. Conservation organizations estimate the polar bear population, particularly hard hit by global warming, will drop two-thirds to the brink of extinction over the next 50 years. Greenland, the US and Russia permit hunting by Inuit natives, and Canada also allows hunting by sportsmen. The hunts claim 700 polar bears annually, 3% of the total population. Critics consider such hunts "unsustainable harvests."