Xinhua: Swelling lakes on the Qinghai-Tibet Plateau, a notable sign of global warming, are threatening the safety of the worlds highest railway, according to climate and ecological experts. One flooded lake is now only 8 kilometers away from a section of the Qinghai-Tibet Railway in the depopulated area of Hol Xil Nature Reserve, according to the latest satellite monitoring by the Qinghai Provincial Academy of Meteorological Sciences. Liu Baokang, engineer with the academys remote-sensing and ecological...