Ottawa Citizen: Smog this year will contribute to the premature deaths of 2, 700 Canadians and put 11,000 in hospitals, costing the economy and health-care system $1 billion, Canada’s doctors say. A report by the Canadian Medical Association calculates that deaths linked to air pollution will rise over the next two decades, claiming nearly twice as many lives each year and costing $1.3 billion annually in health care and lost productivity. The study estimates that by 2031, more than 4,900 …