ANCHORAGE, Alaska — A proposal to list polar bears as threatened under the federal Endangered Species Act has Alaska politicians seeing green, as in the color of money that could be lost if a bear recovery plan hinders the state's resource development.

Gov. Sarah Palin and a majority of legislators strongly oppose the listing and say the acknowledged intent behind it — curbing greenhouse gas emissions nationally — should be debated in another forum, not a law aimed at protecting animals.

"I'm not comfortable with Alaska being used as a pawn in that game," said state Rep. Craig Johnson, R-Anchorage, a leading opponent.

But the rules of the listing game call for a decision to be based on science, and the official Palin administration response says polar bears are thriving, that global warming science is inconclusive and that bears are not threatened by human activity — a claim conservation groups have labeled "ridiculous."

"No one who purports to have even a moderate understanding of the climate literature could possibly fail to be aware of this research, and therefore I must conclude that it is a deliberate attempt to mislead," said Kassie Siegel, an attorney for the Center for Biological Diversity and the author of the original 154-page petition laying out the original case for listing polar bears.

Polar bears are classified as marine mammals because they spend most of their lives on sea ice, using it to hunt seals, breed and travel. The proposed listing is based to a large extent on the threat to sea ice.

The National Snow and Ice Data Center at the University of Colorado last September reported minimum summer sea ice for 2006 at 2.2 million square miles. Since satellite monitoring began in 1979, the summer sea ice minimum has declined 8.59 percent per decade, a rate that will make the Arctic Ocean ice free by 2060, according to NSIDC research scientist Julienne Stroeve.

The Fish and Wildlife Service in December determined that listing polar bear as threatened — in danger of extinction in a significant portion of its range — was warranted, pending further review and public testimony. Palin, elected in November, says the agency did not use the best scientific and commercial information available.

The official state testimony says sea ice is melting, but the Fish and Wildlife Service picked the most extreme climate models to predict future effects. State officials say scientists disagree over humans' role in warming, a more comprehensive evaluation is needed and that polar bears can adapt to less ice.