REUTERS: China leads challenge to "scientific superpowers"

"Although the United States still leads the world, its share of global authorship has fallen to 21 percent from 26 percent and its closest rival is now China, which has risen from sixth to second place with a share of authorship rising to 10.2 percent from 4.4 percent."

http://www.reuters.com/article/idUSTRE72R6FQ20110331


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