"Since the
center pivots’ debut some six decades ago, the amount of irrigated
cropland in Kansas has grown to nearly three million acres, from a mere
250,000 in 1950. But the pivot irrigators’ thirst for water
— hundreds and sometimes thousands of gallons a minute — has sent much
of the aquifer on a relentless decline.... A shift to growing corn, a
much thirstier crop than most, has only worsened matters. Driven by
demand, speculation and a government mandate to produce biofuels, the
price of...
Published on May 20, 2013 07:59