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

itoggle caption Petar Kujundzic/Reuters/Landov

Zhaxi Cairang (right), a 59-year-old Tibetan nomad, moved to a city in western China 15 years ago as part of a government effort to settle nomads. But Zhaxi says he plans to return to herding yaks next year. His son Cicheng Randing was raised in the city, but his father wants to expose him to traditional nomadic life as well. Anthony Kuhn/NPR hide caption

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Pro-democracy protesters chant slogans as they gather next to the central government offices in Hong Kong on Wednesday. Alex Ogle/AFP/Getty Images hide caption

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