The polar bear has become a "symbol of global warming caused by humans" in the eyes of environmentalists. Some groups even went as far as suing the Interior Department with the aim of adding polar bears to the list of threatened species.<ref>International Herald Tribune: [http://www.iht.com/articles/2006/12/28/news/bear.php "Melting arctic ice pushes polar bear population closer to the edge"]</ref> | The polar bear has become a "symbol of global warming caused by humans" in the eyes of environmentalists. Some groups even went as far as suing the Interior Department with the aim of adding polar bears to the list of threatened species.<ref>International Herald Tribune: [http://www.iht.com/articles/2006/12/28/news/bear.php "Melting arctic ice pushes polar bear population closer to the edge"]</ref> |