Agence France Presse: Canada on Monday unveiled new environmental rules requiring future oil sands companies to capture and store carbon, and a ban on new construction of dirty coal burning power plants, both as of 2012. The two sectors are key emitters of greenhouse gases linked to global warming, Canada’s Environment Minister John Baird said in a statement. The new regulations are needed for Canada to meet its target for reducing greenhouse gases by 20 percent by 2020, he said. "Our …