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Nature 453, 587 (29 May 2008) | doi:10.1038/453587c; Published online 28 May 2008

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Time to break the silence around virtual-water imports

Junguo Liu1 & H. H. G. Savenije2

  1. Swiss Federal Institute of Aquatic Science and Technology (Eawag), Uberlandstrasse 133, PO Box 611, CH-8600 Dübendorf, Switzerland
  2. Delft University of Technology, Department of Water Management, PO Box 5048, 2601 DA Delft, The Netherlands

Your News Feature 'More crop per drop' (Nature 452, 273–277; 2008) mentions that China has "unconsciously" turned to 'virtual-water' imports by importing food that requires large amounts of water to produce. Officially, however, the Chinese government continues to advocate self-sufficiency in food because it regards reliance on international food import as a threat to domestic security.

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