Over Utah, “Aerial America” hovered over the evaporation ponds of a potash-mining facility on the Colorado River. Smithsonian Channel High over the heart of Texas, “Aerial America” swooped ...

Photos of the French Alps, Utah, the Maldives, Quebec, Australia and Argentina show the naturally occurring letters.

Until now, not much was known about the influence that nozzle type and application volume have on weed control ...