China launches scientific expedition at Yangtze headwaters

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Members of a scientific expedition have lunch in Yushu Tibetan Autonomous Prefecture, northwest China’s Qinghai Province, Aug. 8, 2019. Chinese scientists recently launched a scientific expedition in the headwater region of the Yangtze River, China’s longest river, aiming to explore the water resources and ecology in the region. (Xinhua/Wu Gang)

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