A jogger goes for a run amid heavy smog in Shanghai on Wednesday. China has for the first time agreed to limit its carbon emissions, but critics are questioning whether the move goes far enough. AFP/Getty Images hide caption

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Chinese President Xi Jinping and President Obama, seen here during a ceremony at the Great Hall of the People in Beijing, announced pledges to reduce greenhouse gases. HUANG JINGWEN/Xinhua /Landov hide caption

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U.S. President Barack Obama, right, smiles after a group of children waved flags and flowers to cheer him during a welcome ceremony Wednesday with Chinese President Xi Jinping at the Great Hall of the People in Beijing. In a surprise agreement late Tuesday, China agreed to a first-ever target for capping its carbon emissions, while the United States pledge to cut faster than previously planned. Andy Wong/AP hide caption

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Russia's President Vladimir Putin (right) helps put a shawl or coat on Peng Liyuan, wife of China's President Xi Jinping, as Xi talks to President Obama during a fireworks show celebrating the Asia-Pacific Economic Cooperation session in Beijing. Reuters/Landov hide caption

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An international tariff on high-tech goods could be rewritten, thanks to negotiations in China. Here, men use smartphones in Beijing last month, days after Apple released its iPhone 6 in the Chinese market. GREG BAKER/AFP/Getty Images hide caption

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President Obama arrives at the Beijing airport Monday. Speaking at the APEC summit, the president unveiled a new deal to ease visa restrictions between the U.S. and China. Lintao Zhang/Getty Images hide caption

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Secretary of State John Kerry and Chinese Foreign Minister Wang Yi meet on the sidelines of the Asia-Pacific Economic Cooperation (APEC) meeting in Beijing on Friday. Beijing and Washington backed an anti-corruption pact. Reuters/Landov hide caption

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Visitors walk past a portrait of late communist leader Mao Zedong on Tiananmen Gate in Beijing on Sept. 30, the eve of National Day. Greg Baker/AFP/Getty Images hide caption

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The casino strip in Macau has revenues roughly seven times its counterpart in Las Vegas. With China's government cracking down on corruption, the gambling business is down sharply. Chris McGrath/Getty Images hide caption

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China's WeChat messaging app has a huge audience that allows Chinese to organize online. Petar Kujundzic/Reuters/Landov hide caption

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A customer sets up her new iPhone 6 at an Apple store in Beijing on Friday. A group says the Chinese government backed an attack against users of Apple's iCloud service, but the government denies the claim. Feng Li/Getty Images hide caption

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Pro-democracy protesters carrying portraits of Hong Kong Chief Executive Leung Chun-ying march to his residence in Hong Kong on Wednesday. Bobby Yip/Reuters/Landov hide caption

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Adi Asulin stands in the kitchen of her family's remodeled apartment north of Tel Aviv. She saved thousands of dollars by flying to China to buy furnishings and flooring directly from manufacturers. Emily Harris/NPR hide caption

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Pro-democracy protesters gather during a rally of the ongoing Occupy Central movement in the Admiralty District of Hong Kong on Monday. The territory's leader has accused foreign elements of helping stoke unrest. Jeon Heon-kyun/EPA/Landov hide caption

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