Word: sun
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Dates: during 1990-1999
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...late Qing Dynasty (that is, from 221 B.C. to 1911), the 27 appearances of Halley's Comet were all recorded in China. Zhang Heng, of the Han Dynasty, invented a seismograph to determine the location of earthquakes, and the celestial globe that showed the movement of the sun, moon and other stars. Mathematicians in the pre-Qin days put forward the proposition known as the Pythagorean theorem in the West today. In the Northern and Southern Dynasties in the 4th century A.D., China's mathematician Zu Chongzhi calculated the ratio of the circumference of a circle to its diameter...
...renovation. The fruits of ancient Chinese civilization were brought about by the tireless efforts and hard work of the Chinese nation. In the past hundred years or so, the Chinese people have waged arduous struggles to get rid of the sufferings under semi-colonial and semi-feudal rule. Dr. Sun Yat-sen, China's forerunner of the democratic revolution, was the first to put forward the slogan of "rejuvenation of China." He led the Revolution of 1911 to remove the millennia-old autocratic monarchy in China. Under the guidance of Mao Zedong Thought, the Chinese Communist Party led the Chinese...
...same time, evidence of global warming's dangers has continued to mount. When politicians started talking seriously about the problem in the late 1980s, the relationship between the proliferation of carbon dioxide and a warming world was largely theoretical. Scientists knew that CO2 and other gases trap the sun's energy; in fact, without any CO2 at all in the atmosphere, the planet would be frozen solid. The notion that extra, human-generated CO2 might drive temperatures too far the other way was convincing. But if warming was on the way, it was too gradual to be detected...
Jiang was also pleased to point out the inauguration of the Sun Yat Sen lectures at Drexel, which will be aimed at educating Drexel students about China's past, present and future. Sun Yat Sen, regarded as the father of modern China by mainland Chinese and Taiwanese alike, inspired the revolution that overthrew the Qing dynasty...
...yesterday, about 20 protesters gathered at a street corner one block away from the Main Building, for a quiet demonstration against China's policies towards Tibet. Organized by several Tibetan groups, the mini-rally attracted nearly as many reporters as protesters. But as the sun dropped in the sky by late afternoon, more and more people joined the swelling crowd...