Globe and Mail: Stéphane Dion’s so-called Green Shift scheme came under scrutiny yesterday over how British Columbians can avoid being doubly penalized by his environmental plan and their provincial carbon tax. Mr. Dion was at a town hall meeting at the University of Victoria, giving a loose and sometimes humorous performance as he took questions from students. But a constant concern of British Columbians involves the centrepiece of Mr. Dion’s campaign platform, as a tax on fuel at the pumps was …