RIA Novosti: The population of polar bears in Russia’s Far Eastern republic of Chukotka has dwindled to the point of being vulnerable to extinction, according to research carried out by World Wildlife Fund experts. Polar bears, a species in steady decline throughout the Arctic, are most vulnerable in early spring as they leave their lairs and move to the north. The WWF’s Polar Bear Patrol launched a campaign in April on monitoring the bears in coastal areas. A coordinator of the project, …