Dr. Tony Allan won the 2008 Stockholm Water Award for, among other things, the concept of “virtual water,” the water embedded in a commodity. This allows comparisons and informed choice. For instance, a cup of coffee takes 140 liters of water, and a hamburger patty 2400 liters. This view makes it clear that a meat-light diet and reducing food waste are two excellent ways to reduce water use.True to his conclusions, Dr. Allan is now a vegetarian.
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