Local residents and biologists were startled by the sighting of a polar bear near the village of Emmonak at the mouth of the Yukon River. There have been other sightings of polar bears on the Yukon-Kuskokwim Delta this summer compared to only a few that have been seen this far south every three to five years
MORE >>How global warming is changing Polar bear populations in Russia and why humans care.
MORE >>Scientists carrying out studies of wildlife in the Arctic say global warming is causing dramatic changes in animal and plant life, threatening some species with extinction. The report is a compilation of studies of Arctic ecosystems by an international team of scientists who have been collaborating during the fourth International Polar Year, which ended in 2008
MORE >>
