Globe and Mail: NDP Leader Jack Layton is launching an attack on the notion of carbon taxes Thursday, distancing himself from a new Liberal climate change plan that has yet to even be introduced. In a speech to staff and volunteers of an Ottawa homeless shelter, Mr. Layton will argue a carbon tax would penalize the growing number of Canadians who are already having a hard time making ends meet. “Canadians believe that it’s high time we place a price on carbon,” states an advance copy of the …