Palin has a very bad environmental record.

She opposes listing polar bears as threatened. Contrary to what others have said in this thread, polar bears ARE losing habitat due to human activity --- the human activity that is contributing to global warming. Her reason for opposing the listing is that she is worried that listing polar bears as threatened will interfere with new oil field and pipeline development, and offshore drilling. So clearly she is worried that these activities DO affect polar bear habitat and will be limited if that habitiat must be protected.

She opposed a ballot initiative to prohibit metal producing companies from dumping polluted wastewater into rivers that serve as salmon habitat.

She supports drilling in ANWAR, which is something even McCain does not support. She supports offshore drilling, which is something McCain has recently flip-flopped to support.

She denies human activities contribute to global warming, which is another area of disagreement between her and McCain. Her own state will be one of the first to suffer from global warming and is already losing whole villages as they sink into the mud when the permafrost thaws.