Guardian: The Republican Sarah Palin and her officials in the Alaskan state government drew on the work of at least six scientists known to be sceptical about the dangers and causes of global warming, to back efforts to stop polar bears being protected as an endangered species, the Guardian can disclose. Some of the scientists were funded by the oil industry. In official submissions to the US government’s consultation on the status of the polar bear, Palin and her team referred to at least six …