Canada, the world's seventh-largest emitter of greenhouse gases, increased carbon dioxide and nitrogen oxide emissions from oils-sands production last year. Emissions of carbon dioxide, the main greenhouse gas produced by humans, rose 1.8 percent to about 47.1 million tons, while nitrogen oxide output increased 2.1 percent to 84,037 tons, according to a report from the Canadian Association of Petroleum Producers released today. Oil-sands production last year rose 9.5 percent, Travis Davies, a spokesman for CAPP, said in an interview.
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