Crop circles have fascinated and perplexed people for decades, sparking debates and theories ranging from natural phenomena to extraterrestrial artistry. As new evidence and theories emerge, the ...

It started with a picture. In April 2007, Monique Klinkenbergh stumbled across the image that would upend her life. Its composition—perfectly executed rings of triangles and diamonds in concentric ...

A mysterious 310-foot-diameter crop circle that appeared in a farmer's barley field in Chualar, Calif., as 2013 ended puzzled the public for more than a week. Echoing the sentiments of many, the field ...