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McCain differs on climate change with Bush

Senator John McCain sought to distance himself from US President George W. Bush on Monday as he called for a mandatory limit on greenhouse gas emissions in the United States to combat climate change. Mr McCain, in a speech at a wind power company, also pledged to work with the European Union to diplomatically engage China and India, two of the world's biggest polluters, if they refuse to participate in an international agreement to slow global warming.

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