polar bears polar bears Eisbären http://www.nwf.org/Wildlife/Threats-to-Wildli... http://www.nwf.org/Wildlife/Threats-to-Wildli... threats of global warming arctic wildlife dying off http://www.nwf.org/Wildlife/Threats-to-Wildli... http://www.nwf.org/Wildlife/Threats-to-Wildli... polar bears less and less time to find food impacts of climate change to polar bears says Save the Roar National Wildlife Federationâs Website polar bear polar bears http://www.nwf.org/Wildlife/Threats-to-Wildli... http://www.nwf.org/Wildlife/Threats-to-Wildli... disappear from the wild polar bears polar bears National Wildlife Federation polar bears polar bears National Wildlife Federation estimates polar bears