Globe and Mail: The idea that a carbon tax could be palatable to voters seemed to die with Stéphane Dion’s federal campaign last fall, but another Liberal Leader has brought it back to life. Climate-change experts say Gordon Campbell’s victory in British Columbia’s election Tuesday, which saw his party not only hold ground but also gain a few seats, is a signal voters are so concerned about global warming that they are ready to embrace a carbon tax. Even if it pumps up the price of gas by seven cents …