Agence France-Presse: Global markets could become a leading tool for halting global warming, former US vice president Al Gore said on Sunday, a day before he was to receive the Nobel Peace Prize for his work on climate change. Gore, who will receive the prestigious prize along with the United Nations’ top climate panel, called for taxes on carbon dioxide emissions and the creation of a global emissions trading market to help stem global warming. “We have to find a way to enlist the energy and …