LE BOURGET, France, (APP) – The leaders of China and the United States, the world’s two biggest carbon polluters, agree they have a duty to curb global warming, President Barack Obama said Monday at the launch of a global climate summit in Paris.

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“As the two largest carbon emitters, we have both determined that it is our responsibility to take action,” Obama said as he sat at a table with China’s President Xi Jinping for talks on the sidelines of the climate conference.