Charles C. Mann Quote

Agricultural losses are costly to prevent. Most irrigation is deployed through canals. They lose water because it seeps through the bottom, evaporates during transmission, and spills out at junctions; a rule of thumb is that almost two-thirds of the water is lost, and often much more. (The figures are imprecise, because some of the lost water flows usefully into neighboring fields or percolates back into rivers.)

Charles C. Mann

Agricultural losses are costly to prevent. Most irrigation is deployed through canals. They lose water because it seeps through the bottom, evaporates during transmission, and spills out at junctions; a rule of thumb is that almost two-thirds of the water is lost, and often much more. (The figures are imprecise, because some of the lost water flows usefully into neighboring fields or percolates back into rivers.)

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About Charles C. Mann

Charles C. Mann (born 1955) is an American journalist and author, specializing in scientific topics. In 2006 his book 1491: New Revelations of the Americas Before Columbus won the National Academies Communication Award for best book of the year. He is the co-author of four books, and contributing editor for Science, The Atlantic Monthly, and Wired.