The polar region -- which includes the Arctic Ocean and parts of Alaska, Canada, Denmark, Finland, Russia, Norway and Sweden -- has experienced unpredictable climatic changes over the last few years. As a result, polar bears and their natural habitat are seriously threatened.
"The climate changes seem to be caused partly by natural factors about which we can do nothing, such as anomalous solar activity," said Vyacheslav V. Pankov, director for the Guild of Russian Ecologists. The guild was created to unite Russian ecologists and experts on the environment.
"But the environmental effects of human activities -- pollution, destruction of natural migration routes, a reduction of food sources -- create additional problems for the conservation of biodiversity," he added.