The possible kinematics and their corresponding geometries were once regarded as an already-solved problem. The de Sitter relativity research group formed by researchers from the CAS, Tsinghua University, and Beijing Normal University, restudied the problem and showed that additional, previously unknown realizations exist of possible kinematical algebras, each of which has so isotropy and a ten-generators symmetry group.
A tiny fraction of carbon helps account for the oddly light density of Earth's iron core, a new computer simulation finds. Though the core is only 0.1 percent to 0.8 percent carbon, the iron ball is the largest reservoir of carbon on the planet, the study authors said.
Scientists who are conducting a survey of endangered finless porpoises on the Yangtze River said Monday that they also hope to find white-flag dolphins (baiji or Yangtze River dolphin), a native species that was declared extinct in 2007. The survey team, who started its research on Sunday, reached a white-flag dolphin nature reserve in central China's Hubei Province on Monday.
In this week's Nature Climate Change, scientists from Michigan State University and the CAS give comprehensive forecasts of how changing climate may affect the most common species of bamboo that carpet the forest floors of prime panda habitat in northwestern China. Even the most optimistic scenarios show that bamboo die-offs would effectively cause prime panda habitat to become inhospitable...
China is likely to release a document deemed vital for mass application of its Beidou navigation satellite system by the end of the year as it is ready to provide services overseas, according to experts. "As the system is to officially provide services to customers in the Asia-Pacific region early next year, its ICD will be likely made public around the end of the year, to encourage Beidou's application overseas."
Chinese scientists on Sunday launched a survey of endangered finless porpoises in the country's largest river Yangtze, amid worries that the freshwater mammal might be on the verge of extinction. Consisting of researchers from the Ministry of Agriculture, the CAS and the WWF, the survey team set off in Wuhan, a central Chinese city along the Yangtze River.
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