'Virtual water', a barometer of global water resources
Thursday, April 5, 2012 - 07:31
in Biology & Nature
When goods are produced, water is used in the process. Even though this water is virtual, tracking its import and export gives a crucial indication of the evolution of world water resources. An international team of hydrologists has studied the global trade of virtual water, and is publishing an article this week in the journal PNAS outlining a number of striking conclusions.