Summary: For decades, people have been fascinated by crop circles. What started out decades ago as simple shapes has evolved into complex geometric patterns. Crop circles appear overnight but to this day, nobody knows how they form. Are they a hoax? The result of natural phenomena? Or perhaps something else? Sponsors! Pitney Bowes - Visit us online at pb.com/UNEXPLAINED and get a free 60 day trial of a Pitney Bowes C200. The Great Courses Plus - Listeners get a FREE MONTH of unlimited access when you sign up at Thegreatcoursesplus.com/Unexplained
