water resources

Those of us who have grown up in the Midwest (which I define, roughly, as between the Appalachians and the Mississippi) are amazed the first time we venture west and encounter thousands of miles of arid land. At home, we're surrounded by water, and assume this is the way man was meant to live. If...

Many years ago, the mighty Colorado River quit reaching the Sea of Cortez, petering out south of the Imperial Valley. I thought of the Colorado as I read about virtual water, the concept of Professor John Anthony Allan of the University of London. Virtual water is, in a nutshell, the total amount...