Canadian Press: A new environmental study warns that other regions of Canada would suffer if a national cap-and-trade system for greenhouse gas emissions made allowances for Alberta’s oilsands. “We’re calling on the provinces to ask the federal government that the system be set up equitably across all regions and sectors,” said Gillian McEachern of ForestEthics, one of six groups behind the study sent to federal Environment Minister Jim Prentice. Its release came on the eve of a Tuesday …