单词:karstologist
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China and Iceland have signed a Free Trade Agreement. The agreement was signed during Icelandic Prime Minister Johanna Sigur-dar-dottir's official visit to China on Monday. Iceland becomes the first European nation to have an FTA with China. The agre
This is Scientific American's 60-Second Science, I am Karen Hopkin. This'll just take a minute. Biologists, traditionally track migrations by tagging animals with devices that allow their movements to be monitored. But Homo sapiens can't be fitted wi
By Carol Pearson Washington, DC 08 November 2006 watch Heart Stent report Heart stents are lifesaving medical devices that help prevent heart attacks. Most of these stents are coated with various drugs, but mounting data suggest drug-coated stents c
MUNICH, Germany, Dec. 27 (Xinhua) -- German car producer Audi AG announced Saturday to expand its investment program to 24 billion euros (29 billion U.S. dollars) at home and abroad from 2015 through 2019. The total investment volume comprises about