US lists polar bears as threatened (AFP)

One of many polar bear alert warning signs posted inside the town of Churchill, Canada. The US government Wednesday listed polar bears as an endangered species, warning that melting of Arctic sea ice was threatening their habitat.(AFP/File/Paul J. Richards) AFP - The US government has listed polar bears as a threatened species owing to a drastic reduction in Arctic sea ice, but insisted the step did not mark a policy shift to attack global warming.