Polar bears listed as US threatened species

Polar bears were listed as threatened under the US Endangered Species Act because their sea ice habitat is melting away. But the new protection was not accompanied by any proposals to address either climate change, which environmentalists say causes the deterioration of the bears' habitat, or drilling in the Arctic for the fossil fuels that spur the climate-warming greenhouse effect.

In announcing the government's decision one day before a court-ordered deadline, Interior Secretary Dirk Kempthorne acknowledged that human-caused greenhouse gas emissions contributed to the global warming damaging the polar bears' habitat.

"While the legal standards under the Endangered Species Act compel me to list the polar bear as threatened, I want to make clear that this listing will not stop global climate change or prevent any sea ice from melting," he said at a briefing.

"Any real solution requires action by all major economies for it to be effective," Mr Kempthorne said.

The proper forum for combating climate change is among the world's major economies, Mr Kempthorne said. The Bush administration has convened the world's worst greenhouse polluting nations in a series of international meetings.

Polar bears live only in the Arctic and depend on sea ice as a platform for hunting seals. The US geological survey said two-thirds of the world's polar bears - some 16,000 - could be gone by 2050 if predictions about melting sea ice hold true.

Presumptive Republican presidential nominee John McCain, who differs sharply with President George W. Bush on climate change, said he supported the polar bear decision but that a lot more must be done to address the core issue.

The Endangered Species Act requires that decisions to protect wildlife be based solely on science, not on economic factors.