Oh to to be able see in the infra-red! This image is a composite of pivot irrigation systems near Garden City, Kansas is a false-color composite image made using near infrared, red, and green wavelengths. To get the most out of this image you have to click on it and look at the full resolution version.
This image was acquired by Landsat 7’s ETM sensor on September 25, 2000. You can find more images like this one over at NASA’s Visible Earth website.