Crop circles have popped up in cornfields and meadows around the world since the 17th century. UFO enthusiasts claim they're intricate patterns signifying landing pads for alien spacecraft, while ...

Those otherworldly crop circles may not have been caused by aliens after all. Instead, think physics: A study in Physics World points to the possibility that the patterns could be caused by ...

Crop circles -- the strange designs found in crops and grasslands -- have been reported and documented for hundreds of years. Are they a link to a higher intelligence or merely an elaborate prank? In ...

(CNN) — An elaborate crop circle sculpted into a farm two hours south of San Francisco is no more, having been mowed down to the dismay of hundreds who flocked to glimpse the unexplained site. On ...

Crop circles have persistently defied scientific explanation, inspiring any number of outlandish theories about ancient shamanism and extraterrestrial visitations. Now, an Oregon physicist has added ...

Crop circles remain a mystery FOSSTON, Minn. -- Nobody locally has claimed responsibility. The curious trampled the sites to the point where even a crack TV criminologist couldn't detect a meaningful ...

Cue "The X-Files" song. Mysterious, giant crop circles have appeared on a Chualar farm and startled observers into wondering if aliens landed in the Salinas Valley.VIDEO: Locals wonder who -- or what ...

An elaborate crop circle sculpted into farmland two hours south of San Francisco is no more, having been mowed down to the dismay of hundreds who flocked to glimpse the unexplained site earlier this ...