The Qinghai-Xizang Plateau is known as "the roof of the world".Its intensive uplifting has been one of the most important events in the past two million years of the earth history,which strongly affec
China Manned Space Agency announced on April 2 that the Tiangong 1target spacecraft reentered the Earth’s atmosphere around 08:15 Beijing time on April 2 and came down in the middle of the South Pacif