Crop Circles: From Simple Beginnings to Contested Extraterrestrial Explanations and Investigations
To the point
Crop circles have evolved from simple rings to worldwide, intricate designs, provoking explanations ranging from hoaxes by Doug and Dave to scientific claims by Nancy Talbott and William Levengood about heat-affected plant biochemistry and embedded iron, plus UFO-linked phenomena and beliefs in extraterrestrial visitation and government cover-ups.
