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In October 2007, the Chinese Academy of Sci-ences (CAS) initiated a project entitled Roadmap for Strategic Research in Key Fields of Science and Technology in China through 2050. The project was proposed by Prof. Lu Yongxiang, the president of CAS, with the purpose of foreseeing the development of science and technology through the mid 21st cen tury, so as to ensure CAS a leading role in meeting the demands of the nation’s future development.