Virtual Water by the World Water Council
Virtual water is the amount of water that is embedded in food or other products needed for its production. For example, to produce one kilogram of wheat we need about 1,000 litres of water, i.e. the virtual water of this kilogram of wheat is 1,000 litres. For meat, we need about five to ten times more.
Virtual Water by Timm Kekeritz on traumkrieger GmbH
One of the most important research papers in this field is Chapagain, A.K. and Hoekstra, A.Y. (2004), »Water footprints of nations«, Value of Water Research Report Series No. 16, UNESCO-IHE, Delft, the Netherlands.
Designer Timm Kekeritz created a poster, visualizing parts of their research data, to make the issue of virtual water and the water footprint perceptible.
