Melbourne Herald Sun: PRIME Minister Kevin Rudd has vowed to insulate average families from the impacts of his global warming fight. As oil prices hit a record $140 a barrel, the Prime Minister refused to say if he would include petrol in his carbon emissions trading scheme. But he signalled compensation would go beyond help for pensioners and other vulnerable Australians that he had already committed to. “Our approach to emissions trading . . . is that we will provide support, support to …