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 ...

(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 -- 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 ...