SAN FRANCISCO (Reuters) - Three environmental groups are suing the U.S. government to force consideration of whether polar bears are a threatened species, saying rising global temperatures threaten to kill off the Arctic predators.
The suit, filed in U.S. District Court in San Francisco on Thursday, asks the Interior Department to make an initial ruling on a petition to bestow the broad federal protection of the Endangered Species Act upon polar bears by designating them as "threatened."