Cindy and Greg Grieb, owners of a wheat field in Washington, were amused and bewildered when a mysterious crop circle recently appeared on their land. The remote location of the enigma, as well as the lack of damaged crops around it, suggest a potential extraterrestrial origin for the formation. Should that be the case, the Griebs revealed that they would be flattered if their field drew the interest of ETs. More on the story at NBC News.