Aldaya, M.M.; Allan, J.A.; Hoekstra, A.Y. - In: Ecological Economics 69 (2010) 4, pp. 887-894
Virtual water is the volume of water used to produce a commodity or service. Hitherto, most virtual water 'trade' studies have focused on its potential contribution to saving water, especially in water short regions. Very little, however, has been said about the opportunity cost of the...