![CHINA-TIBET-SCIENTIFIC EXPEDITION (CN)](136420361_14992632305701n.jpg)
A scientist displays collected samples of lithobius, in Nagqu of southwest China's Tibet Autonomous Region, July 3, 2017. China began its second scientific expedition to the Qinghai-Tibet Plateau to study changes in climate, biodiversity and environment over the past decades. (Xinhua/Liu Dongjun)