Swedish King Carl XVI Gustaf (1st L) poses with Chinese scientist Yao Tandong (2nd L) and his wife and daughter after awarding 2017 Vega Medal to Yao at the Royal Palace of Stockholm, capital of Sweden, on April 19, 2017. Chinese scientist Yao Tandong received 2017 Vega Medal in Stockholm on Wednesday, recognizing his contributions to research on glaciers and the environment on the Qinghai-Tibet Plateau. (Xinhua/Fu Yiming)
