Secrets in the Fields: The Science and Mysticism of Crop Cricles

They appear at night, complex designs mysteriously imprinted on fields of almost ripened grain. Nobody knows how they got there, or why. They leave the grain stalks in swirls, virtually undamaged. They exhibit mathematical precision. They demonstrate principles of geometry. They portray ancient religious symbols. Since the 1980s, some 10,000 crop circles have appeared, seemingly by magic, in England and 25 other countries. Each year the count grows, and the designs get more intricate, even fantastic. Governments tell us they're hoaxes, but the evidence shows that most are not.