Hundreds of millions of people have seen Google's mysterious "crop circle" logo today, and this made us think about crop circles. What are they if not art that uses nature as a canvas (well, if you can call monocultures nature...). Forget the whole UFO angle, we don't believe for a minute that interstellar visitors would spend their time in corn fields at night. We look at them as art: Here are a few of the most beautiful crop circles ever made, including some that show the sense of humor of their makers.
Credit: Google and Unknowns