History

1678 pamphlet on the "Mowing-Devil".

Certain evidence, such as the Mowing-Devil, suggest the appearance of crop circles well before the 20th century. Nevertheless, there are important differences between that story and modern crop circles. The story of the mowing devil involves the cutting of the crops following a dispute over crop harvesting and an invocation of the devil, no geometric patterns were reported.

 Bower and Chorley

In 1991, self-professed pranksters Doug Bower and Dave Chorley stated that they had started the phenomenon in 1978 by making actual circles on crops with the use of simple tools. After their announcement, in a demonstration the two men made a crop circle in one hour.
After the revelation of the hoax, crop circle-like patterns continued to be made and became more complex. Some even came to resemble extraterrestrials as portrayed by certain science fiction movies, fractals, and archaeological, religious, or mythological symbols. Among others, paranormal enthusiasts, ufologists, and anomalistic investigators have offered hypothetical explanations that have been criticized as pseudoscientific by skeptical groups like the Committee for Skeptical Inquiry.

 Art and business

Since the early 1990s the UK arts collective founded by artist John Lundberg, named the Circlemakers, have been creating some crop circles in the UK and around the world both as part of their art practice and for commercial clients.
On the night of July 11–12, 1992, a crop-circle making competition, for a prize of several thousand UK pounds (partly funded by the Arthur Koestler Foundation), was held in Berkshire. The winning entry was produced by three Westland Helicopters engineers, using rope, PVC pipe, a trestle and a ladder. Another competitor used a small garden roller, a plank and some rope.
In 2002, Discovery Channel commissioned five aeronautics and astronautics graduate students from MIT to create crop circles of their own, aiming to duplicate some of the features claimed to distinguish "real" crop circles from the known fakes such as those created by Bower and Chorley. The creation of the circle was recorded and used in the Discovery Channel documentary Crop Circles: Mysteries in the Fields.

 Legal implications

In 1992 Hungarian youths Gábor Takács and Róbert Dallos, both then 17, were the first people to face legal action after creating a crop circle. Takács and Dallos, of the St. Stephen Agricultural Technicum, a high school in Hungary specializing in agriculture, created a 36-meter diameter crop circle in a wheat field near Székesfehérvár, 43 miles (69 km) southwest of Budapest, on June 8, 1992. On September 3, the pair appeared on Hungarian TV and exposed the circle as a hoax, showing photos of the field before and after the circle was made. As a result, Aranykalász Co., the owners of the land, sued the youngsters for 630,000 HUF (approximately $3000 USD) in damages. The presiding judge ruled that the students were only responsible for the damage caused in the 36-meter diameter circle, amounting to about 6,000 HUF (approximately $30 USD), and that 99% of the damage to the crops was caused by the thousands of visitors who flocked to Székesfehérvár following the media's promotion of the circle. The fine was eventually paid by the TV show, as were the students' legal fees.
In 2000, Matthew Williams became the first man in the UK to be arrested for causing criminal damage after making a crop circle near Devizes.