The international trade of “virtual water” in the form of water-intensive crops can lead to enhanced savings in global water (PNAS)

Read the journal abstract here:
Evolution of the global virtual water trade network.
Dalin C, Konar M, Hanasaki N, Rinaldo A, Rodriguez-Iturbe I.
Proc Natl Acad Sci U S A. 2012 Apr 2. [Epub ahead of print]