Center-pivot irrigation in Garden City, Kansas – 1972 on the left, 2011 on the right Courtesy NASA:
![Center-Pivot Irrigation, Kansas, courtesy NASA Center-Pivot Irrigation, Kansas, courtesy NASA](http://eoimages.gsfc.nasa.gov/images/imagerecords/78000/78644/gardencity_mss_1972-2011_gallery.jpg)
Center-Pivot Irrigation, Kansas, courtesy NASA
h/t Andy Revkin
Center-pivot irrigation in Garden City, Kansas – 1972 on the left, 2011 on the right Courtesy NASA:
Center-Pivot Irrigation, Kansas, courtesy NASA
h/t Andy Revkin
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