And environmentalists are describing Mrs Palin, who denies climate change is man-made, as "either grossly misinformed or intentionally misleading".
She wants to start drilling. She wants to block US moves to list the polar bear as an endangered species. And she has allowed big game hunters to shoot Alaska's bears and wolves from low-flying planes.
"Even the Bush administration can't deny the reality of global warming," Ms Siegel said. "The governor is aligning herself and the state of Alaska with the most discredited, fringe, extreme viewpoints by denying this."