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 new 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 …