Saskatchewan's oilpatch emits a potent greenhouse gas at a higher rate than almost anywhere else in North America, indicates new research from one of Canada's premier climate labs.
Canada proposes new methane emissions rules for oil-and-gas sector calgaryherald.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from calgaryherald.com Daily Mail and Mail on Sunday newspapers.